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Document And Entity Information - USD ($)	12 Months Ended
Document And Entity Information - USD ($)	May 02, 2020	Jun. 08, 2020	Nov. 02, 2019
Document and Entity Information [Abstract]
Document Period End Date	May 02, 2020
Entity Registrant Name	DAKTRONICS INC /SD/
Entity Central Index Key	0000915779
Current Fiscal Year End Date	--05-02
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Public Float			$ 309,995,906
Entity Common Stock, Shares Outstanding		44,569,143
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	FY
Document Type	10-K
Amendment Flag	false

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	May 02, 2020	Apr. 27, 2019
CURRENT ASSETS:
Cash and cash equivalents	$ 40,398	$ 35,383
Restricted cash	14	359
Marketable securities	1,230	26,344
Accounts receivable, net	72,577	65,487
Inventories	86,803	78,832
Contract assets	35,467	33,704
Current maturities of long-term receivables	3,519	2,300
Prepaid expenses and other current assets	9,629	8,319
Income tax receivables	548	1,087
Property and equipment and other assets available for sale	1,817	1,858
Total current assets	252,002	253,673
Property and equipment, net	67,484	65,314
Long-term receivables, less current maturities	1,114	1,214
Goodwill	7,743	7,889
Intangibles, net	3,354	4,906
Investment in affiliates and other assets	27,683	5,052
Deferred income taxes	13,271	11,168
TOTAL ASSETS	372,651	349,216
CURRENT LIABILITIES:
Accounts payable	47,834	44,873
Contract liabilities	50,897	47,178
Accrued expenses	36,626	32,061
Warranty obligations	9,764	9,492
Income taxes payable	844	468
Total current liabilities	145,965	134,072
Long-term warranty obligations	15,860	14,978
Long-term contract liabilities	10,707	10,053
Other long-term obligations	22,105	1,339
Long-term income tax payable	582	578
Deferred income taxes	452	533
Total long-term liabilities	49,706	27,481
SHAREHOLDERS' EQUITY:
Common stock, no par value, authorized 115,000,000 shares; 45,913,209 and 45,317,267 shares issued at May 2, 2020 and April 27, 2019, respectively	60,010	57,699
Additional paid-in capital	44,627	42,561
Retained earnings	85,090	93,593
Treasury stock, at cost, 1,343,281 and 303,957 shares at May 2, 2020 and April 27, 2019, respectively	(7,470)	(1,834)
Accumulated other comprehensive loss	(5,277)	(4,356)
TOTAL SHAREHOLDERS' EQUITY	176,980	187,663
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$ 372,651	$ 349,216

CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	May 02, 2020	Apr. 27, 2019
SHAREHOLDERS' EQUITY:
Common stock, no par value (in dollars per share)	$ 0	$ 0
Common stock, authorized (in shares)	115,000,000	115,000,000
Common stock, issued (in shares)	45,913,209	45,317,267
Treasury stock, at cost (in shares)	1,343,281	303,957

CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	May 02, 2020	Apr. 27, 2019	Apr. 28, 2018
Income Statement [Abstract]
Net sales	$ 608,932	$ 569,704	$ 610,530
Cost of sales	470,232	439,410	464,861
Gross profit	138,700	130,294	145,669
Operating expenses:
Selling	65,902	64,648	62,760
General and administrative	35,193	34,817	34,919
Product design and development	37,772	35,557	35,530
Total operating expenses	138,867	135,022	133,209
Operating (loss) income	(167)	(4,728)	12,460
Nonoperating income (expense):
Interest income	805	1,031	723
Interest expense	(106)	(160)	(217)
Other (expense) income, net	(541)	(1,087)	(537)
(Loss) income before income taxes	(9)	(4,944)	12,429
Income tax (benefit) expense	(500)	(3,986)	6,867
Net income (loss)	$ 491	$ (958)	$ 5,562
Weighted average shares outstanding:
Basic (in shares)	45,031	44,926	44,457
Diluted (in shares)	45,316	44,926	44,873
Earnings (loss) per share:
Basic (in dollars per share)	$ 0.01	$ (0.02)	$ 0.13
Diluted (in dollars per share)	$ 0.01	$ (0.02)	$ 0.12

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	May 02, 2020	Apr. 27, 2019	Apr. 28, 2018
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 491	$ (958)	$ 5,562
Other comprehensive (loss) income:
Cumulative translation adjustments	(965)	(1,749)	1,808
Unrealized gain (loss) on available-for-sale securities, net of tax	44	107	(141)
Total other comprehensive (loss) income, net of tax	(921)	(1,642)	1,667
Comprehensive (loss) income	$ (430)	$ (2,600)	$ 7,229

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References + Details

CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive Loss
Balance at Beginning of Period at Apr. 29, 2017	$ 198,286	$ 52,530	$ 38,004	$ 113,967	$ (1,834)	$ (4,381)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	5,562			5,562
Cumulative translation adjustments	1,808					1,808
Unrealized gain (loss) on available-for-sale securities, net of tax	(141)					(141)
Share-based compensation	2,635		2,635
Exercise of stock options	519	519	0
Tax payments related to RSU issuances	(311)		(311)
Employee savings plan activity	1,682	1,682
Dividends paid	(12,424)			(12,424)
Balance at End of Period at Apr. 28, 2018	197,616	54,731	40,328	107,105	(1,834)	(2,714)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(958)			(958)
Cumulative translation adjustments	(1,749)					(1,749)
Unrealized gain (loss) on available-for-sale securities, net of tax	107					107
Share-based compensation	2,479		2,479
Exercise of stock options	1,318	1,318	0
Tax payments related to RSU issuances	(246)		(246)
Employee savings plan activity	1,650	1,650
Dividends paid	(12,554)			(12,554)
Balance at End of Period at Apr. 27, 2019	187,663	57,699	42,561	93,593	(1,834)	(4,356)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	491			491
Cumulative translation adjustments	(965)					(965)
Unrealized gain (loss) on available-for-sale securities, net of tax	44					44
Share-based compensation	2,265		2,265
Exercise of stock options	0	0	0
Tax payments related to RSU issuances	(199)		(199)
Employee savings plan activity	2,311	2,311
Dividends paid	(8,994)			(8,994)
Treasury stock purchase	(5,636)				(5,636)
Balance at End of Period at May. 02, 2020	$ 176,980	$ 60,010	$ 44,627	$ 85,090	$ (7,470)	$ (5,277)

CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Parenthetical) - $ / shares	12 Months Ended
	May 02, 2020	Apr. 27, 2019	Apr. 28, 2018
Statement of Stockholders' Equity [Abstract]
Cash dividends declared per share	$ 0.20	$ 0.28	$ 0.28

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	May 02, 2020	Apr. 27, 2019	Apr. 28, 2018
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)	$ 491	$ (958)	$ 5,562
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	17,718	18,635	17,784
(Gain) loss on sale of property, equipment and other assets	(35)	(441)	(1,252)
Share-based compensation	2,265	2,479	2,635
Contingent consideration adjustment	0	286	0
Equity in loss of affiliate	741	844	481
Provision for doubtful accounts	(99)	194	140
Deferred income taxes, net	(2,183)	(3,379)	3,148
Change in operating assets and liabilities	(8,090)	11,886	1,863
Net cash provided by operating activities	10,808	29,546	30,361
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of property and equipment	(18,091)	(17,268)	(18,127)
Proceeds from sales of property, equipment and other assets	322	607	2,179
Purchases of marketable securities	0	(25,337)	(17,438)
Proceeds from sales or maturities of marketable securities	25,162	33,706	15,273
Purchases of and loans to equity investment	(11,664)	(1,300)	(1,450)
Acquisitions, net of cash acquired	0	(2,250)	0
Net cash used in investing activities	(4,271)	(11,842)	(19,563)
CASH FLOWS FROM FINANCING ACTIVITIES:
Borrowings on notes payable	15,000	0	0
Principal payments on long-term obligations	(2,149)	(450)	(1,046)
Dividends paid	(8,994)	(12,554)	(12,424)
Proceeds from exercise of stock options	0	1,318	519
Payments for common shares repurchased	(5,636)	0	0
Tax payments related to RSU issuances	(199)	(246)	(311)
Net cash used in financing activities	(1,978)	(11,932)	(13,262)
EFFECT OF EXCHANGE RATE CHANGES ON CASH	111	215	(620)
NET INCREASE (DECREASE) IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH	4,670	5,987	(3,084)
CASH, CASH EQUIVALENTS AND RESTRICTED CASH:
Beginning of period	35,742	29,755	32,839
End of period	$ 40,412	$ 35,742	$ 29,755

Nature of Business and Summary of Significant Accounting Policies

12 Months Ended

May 02, 2020

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Nature of Business and Summary of Significant Accounting Policies

Note 1. Nature of Business and Summary of Significant Accounting Policies

Nature of business: Daktronics, Inc. and its subsidiaries are engaged principally in the design, market, and manufacture of a wide range of integrated electronic display systems and related products which are sold in a variety of markets throughout the world and the rendering of related maintenance and professional services. Our products are designed primarily to inform and entertain people through the communication of content.

Fiscal year: We operate on a 52- or 53-week fiscal year, with our fiscal year ending on the Saturday closest to April 30 of each year. When April 30 falls on a Wednesday, the fiscal year ends on the preceding Saturday. Within each fiscal year, each quarter is comprised of 13-week periods following the beginning of each fiscal year. In each 53-week year, an additional week is added to the first quarter, and each of the last three quarters is comprised of a 13-week period. The fiscal years ended April 27, 2019 and April 28, 2018 contained operating results for 52 weeks, while the fiscal year ended May 2, 2020 contained operating results for 53 weeks.

Principles of consolidation: The consolidated financial statements include Daktronics, Inc. and its subsidiaries. All intercompany accounts and transactions are eliminated in consolidation.

Investments in affiliates: Investments in affiliates over which we have significant influence are accounted for under the equity method of accounting, recording the investment at cost and then subsequently adjusting to account for our share of the affiliates profit or losses, in accordance with the provisions of Accounting Standards Codification ("ASC") 323, Investments - Equity Method and Joint Ventures. Investments in affiliates over which we do not have the ability to exert significant influence over the affiliate's operating and financing activities are accounted for under the cost method of accounting, recording the investment at cost and then subsequently adjusting for any changes in ownership or dividends in accordance with the provisions of ASC 321, Investments - Equity Securities. We have evaluated our relationships with our affiliates and have determined that these entities are not variable interest entities. Cash paid for investments in affiliates and loans to affiliates are included in the "Purchases of and loans to equity investment" line item in our consolidated statements of cash flows. Equity method investments as a whole are assessed for other-than-temporary impairments whenever events or changes in circumstances indicate that the carrying amount of the investment may not be recoverable.

During the fourth quarter of fiscal 2020, we participated in a Series A investment in X Display Company ("XDC"). XDC creates and owns leading intellectual property (IP) and capabilities in microLED mass transfer technology. This investment will support XDC’s further development in microLED capabilities and applications. MicroLED technologies support Daktronics’ line of narrow pixel pitch LED displays and will enable solutions to move into the realm of less than 1-millimeter pixel spacing. We own approximately 12 percent of the shares of XDC outstanding. We have the right to invest $5,000 in XDC within one year if certain conditions exist. This additional investment would result in approximately an additional six percent ownership in the company. XDC is accounted for under the equity method of accounting.

During the fourth quarter of fiscal 2020, the COVID-19 crisis impacted the global economy. While this uncertain economic outlook has caused near-term changes, we do not believe this change will have a permanent impact to our investments in affiliates.

The aggregate amount of investments accounted for under the equity method was $17,257 and $3,657 at May 2, 2020 and April 27, 2019, respectively. Our proportional share of the respective affiliates' earnings or losses is included in the "Other (expense) income, net" line item in our consolidated statements of operations. For fiscal years 2020, 2019, and 2018, our share of the losses of our affiliates was $741, $844, and $481 respectively.

Summarized financial information for equity method investments consist of the following:



	Year Ended
	May 2, 2020			April 27, 2019			April 28, 2018
Balance sheet data:
Current assets	$	10,593		$	192
Non-current assets	4,266			2,626
Current liabilities	2,755			839
Non-current liabilities	4,086			2,599
Income statement data:
Net loss	(1,383		)	(2,168		)	(1,493	)

Use of estimates: The preparation of financial statements in conformity with generally accepted accounting principles in the United States ("GAAP") requires management to make estimates and assumptions affecting the reported amounts of assets and liabilities; the disclosure of contingent assets and liabilities at the date of the financial statements; the reported amounts of revenues and expenses during the reporting period; and our ability to continue as a going concern. Due to the inherent uncertainty involved in making estimates, actual results in future periods may differ from those estimates. Material estimates that are particularly susceptible to significant change in the near-term relate to the determination of the estimated total costs on uniquely configured contracts and estimated costs to be incurred for product warranties and income taxes. Estimation processes are also used in inventory valuation, the allowance for doubtful accounts, share-based compensation, goodwill impairment, and extended warranty and product maintenance agreements. Changes in estimates are reflected in the periods in which they become known.

Cash and cash equivalents: All highly liquid investments with maturities of three months or less at the date of purchase are considered to be cash equivalents and consist primarily of government repurchase agreements, savings accounts and money market accounts that are carried at cost, which approximates fair value. We maintain our cash in bank deposit accounts, the balances of which at times may exceed federally insured limits. We have not experienced any losses in such accounts.

Restricted cash: Restricted cash consists of cash and cash equivalents held in bank deposit accounts to secure issuances of foreign bank guarantees.

The following table provides a reconciliation of cash, cash equivalents, and restricted cash reported within the consolidated balance sheets that sum to the totals of the same amounts shown in the consolidated statement of cash flows:



	May 2, 2020		April 27, 2019		April 28, 2018
Cash and cash equivalents	$	40,398	$	35,383	$	29,727
Restricted cash	14		359		28
Total cash, cash equivalents, and restricted cash shown in the consolidated statement of cash flows	$	40,412	$	35,742	$	29,755

Inventories: In accordance with ASC 330, Inventory, our inventories are stated at the lower of cost (first-in, first-out method) and net realizable value. Net realizable value is the estimated selling price in the ordinary course of business, less reasonably predictable costs of completion, disposal, and transportation. Cost is measured as the price of the components and allocated expenses for production or betterment of the inventory item. When we estimate net realizable value to be lower than cost, any necessary adjustments are charged to cost of sales in that period. In determining net realizable value, we review various factors such as current inventory levels, forecasted demand, costs of completion, and technological obsolescence.

Allowance for doubtful accounts: We make estimates regarding the collectability of our accounts receivable, long-term receivables, contract assets and other receivables. In evaluating the adequacy of our allowance for doubtful accounts, we analyze specific balances, customer creditworthiness, changes in customer payment cycles, and current economic trends. If the financial condition of any customer were to deteriorate, resulting in an impairment of its ability to make payments, additional allowances may be required. We charge off receivables at such time as it is determined collection will not occur in accordance with ASC 310, Receivables.

Revenue recognition: We adopted ASU 2014-09 and its related guidance under the modified retrospective method during the first quarter of fiscal 2019 by applying the guidance to all open contracts at the adoption date. The adoption of this standard did not materially change the timing or amount of revenue recognized, primarily based upon our assessment of "point in time" and "over time" revenue recognition.

Our accounting policies and estimates as a result of adopting ASU 2014-09, Revenue from Contracts with Customers (Topic 606), are as follows:

Contracts are identified and follow the revenue recognition policies when all of the following occur: we have evidence that all parties to the contract have approved the contract and are committed to perform their respective obligations, we can identify each party’s rights regarding the goods or services to be transferred, we can identify the payment terms for the goods or services to be transferred, the contract has commercial substance, and it is probable we will collect substantially all of the consideration to which we would be entitled in exchange for the goods or services.

Pre-contract costs are generally expensed as incurred, unless they are directly associated with an anticipated contract and recoverability from that contract is probable. Pre-contract costs directly associated with anticipated contracts expected to be recoverable include $1,582 and $857 as of May 2, 2020 and April 27, 2019, respectively. These are included in the "Inventories" line item in our consolidated balance sheets.

At contract inception, we identify performance obligations by reviewing the agreement for material distinct goods and services. Goods and services are distinct when the customer can benefit from them on their own and our promises to transfer these items are identifiable from other promises within the contract. When we are contracted to provide a single promise (an integrated system), we often treat it as a single performance obligation if we are providing goods and services with the same pattern of transfer that are highly integrated or interdependent, that are modified or customized by other goods or services promised, or that provide a combined outcome for which the customer has contracted. When less interdependency or integration is necessary, or when the customer can benefit from distinct items, we separate the contract into multiple performance obligations. We account for extended warranties and other services ("service-type warranties") that represent a distinct service as a separate performance obligation.

Our contracts can contain multiple components of transaction price. We evaluate each contract for these components and include fixed consideration, variable consideration, financing components, and non-cash consideration and exclude consideration payable to a customer and sales taxes in the transaction price. When we are responsible for site installations which include subcontracted work, we maintain the contractual responsibilities and risks and include the consideration for these services in the transaction price. When our contract contains variable consideration, including return rights, discounts, claims, unpriced change orders, and liquidated damages, we estimate the transaction price using the expected value (i.e., the sum of the probability-weighted amount) or the most likely amount method, whichever is expected to better predict revenue for that contract situation. We also constrain the revenue to the extent that it is probable that a significant reversal of the amount of cumulative revenue recognized will not occur when the uncertainty associated with the variable consideration is subsequently resolved. We consider the following factors in determining revenue associated with variable consideration: (a) the contract or other evidence providing the legal basis, (b) additional costs caused by unforeseen circumstances, (c) evidence supporting the claim, and (d) historical evidence and patterns of customers. We adjust the contract price for the effects of a significant financing component if we expect, at contract inception, that the period between when we transfer goods and services to a customer will exceed one year from the time the customer pays and represents financing. If the payment structures exceed a year but are structured to account for risks with a contract or correspond to payments on milestones or are scheduled for performance, we do not adjust the contract price for a financing component. See "Note 9. Receivables" for amounts recorded in long-term receivables.

When separate performance obligations are identified, we allocate the transaction price to the individual performance obligation based on the best method we judge as faithfully depicting the value of the performance obligation. Many of our contracts are bundled, and we do not have separate selling prices for each performance obligation; therefore, for these contracts, we primarily use the cost plus a margin approach to allocate the relative transaction price to identified performance obligations, as it is the best representative of our pricing methods.

Revenue is recognized when we satisfy a performance obligation. We receive payments from customers based on a billing schedule as established in our contracts. Billing schedules include down payments and progress billings over time; set milestone payments that are specific to the project are scheduled for performance-based payments or are set time-based payment(s). Variability in contract assets and contract liabilities relates to the timing of billings and revenue recognition, which can vary significantly depending on contractual payment terms and build and installation schedules and the related timing differences in transfer of control. Balances are also impacted by the seasonality in our business.

Significant judgments and estimates are used in our revenue policies. Throughout the revenue cycle, we evaluate contractual evidence, monitor our performance, evaluate variable consideration changes, update estimated costs to complete cost-to-cost projects, and obtain evidence of deliveries or other control change evidence for appropriate and consistent revenue recognition. We maintain internal policies and procedures to provide guidance for those involved in recording revenue. We monitor for changes in our business sales practices and customer interactions to capture the appropriate types of performance obligations and adjust for any change in control terms and conditions.

Our material performance obligation types include:

Unique configuration contracts: audio-visual communication systems uniquely configured (custom) or integrated for a customer's particular location and system configuration may include all or a combination of the following: engineering services, project management services, video display(s), control solution(s), installation and integration services, scoring and messaging equipment, training, other on-site services, spare parts, software licenses, and assurance-type warranties.

We may have multiple performance obligations in these types of contracts; however a majority are treated as a combined single performance obligation. In our judgment, this accounting treatment is most appropriate because the substantial part of our promise to customers is to provide significant integration services and incorporate individual goods and services into a combined output or system. Often times, the system is customized or significantly modified to the customer's desired configurations and location, and the interrelated goods and services provide utility to the customer as a package.

Revenue for uniquely configured (custom) or integrated systems is recognized over time using the cost incurred input method. Over time revenue recognition is appropriate because we have no alternative use for the uniquely configured system and have an enforceable right to payment for work performed. The cost incurred input method measures costs incurred to date compared to estimated total costs for each contract. This method is the most faithful depiction of our performance because it measures the value of the contract transferred to the customer. Costs to perform include direct and indirect costs for contract design, production, integration, installation, and assurance-type warranty reserve. Direct costs include material and components; manufacturing, project management and engineering labor; and subcontracting expenses. Indirect costs include allocated charges for such items as facilities and equipment depreciation and general overhead. Provisions of estimated losses on uncompleted contracts are made in the period when such losses are capable of being estimated.

Contract modifications to existing contracts with customers are evaluated in accordance with the five-step revenue model. We treat contract modifications as a separate contract and new performance obligations when the additional goods or services are distinct and do not add to the unique configuration or are outside the integrated system and when the consideration reflects standalone selling prices. If the additional goods or services offered under the modification enhance the uniquely configured or integrated systems, revenue is allocated to the existing contracts' performance obligation. Modifications may cause changes in the timing of revenue recognition depending on the allocation to various performance obligations.

The time between contract order and project completion is typically less than 12 months but may extend longer depending on the amount of custom work and customers’ delivery needs.

Limited configuration (standard systems) and after-sale parts contracts: Limited configured (standard systems) or after-sale parts contracts with limited or no configuration or limited integration are recognized as distinct individual performance obligations when material. When not distinct, we combine into one performance obligation the goods and/or services with each other until the bundle of goods or services is distinct. For standard display purchases made in large quantities, we account for each piece of equipment separately as a distinct performance obligation from which a customer derives benefit. Immaterial goods or services in the context of the contract are included with the display system performance obligation. Standard systems and equipment with limited configurations or integrations may include all or a combination (when immaterial) of the following performance obligations: engineering services, project management services, video display(s), control solution(s), installation and integration services, scoring, messaging and audio equipment, training, spare parts, software licenses, assurance-type warranties, and after-sale parts.

Revenue is recognized at a point in time when control passes, or over time as services are performed. When fulfilling limited configuration performance obligations, we are typically able to redirect the video displays or scoring, messaging, or audio equipment to another customer without incurring significant economic losses. Therefore, we have an alternative use for the performance obligation and recognize revenue upon our substantial completion and at the point in time we estimate control has transferred to the customer. When limited configured single performance obligations are more service-type (i.e., installation and integration services), we recognize revenue over time using the cost-to-cost input method, which is the most faithful depiction of the customer obtaining control and benefits from the work performed.

Services and other: Services sold on a stand-alone basis or after the initial system sale include performance obligations such as event support, control room design, on-site training, equipment service, service-type warranties, technical support, software sold as a service, and other immaterial revenue streams. These are contracted with a customer generally per service event or service type on a stand-alone basis. Services, service type warranties, and other are recognized as net sales when the services are performed, and control is transferred to the customer at a point in time when title or control passes or over time as services are performed and for time-based "stand ready to perform" type obligations. We use professional judgment to determine control transfer. If we have the right to consideration from a customer that directly corresponds with the value of our performance (where we bill a fixed amount for each hour of service provided), we recognize revenue related to the work completed.

Software: Revenues from software license fees on sales, other than uniquely configured type contracts, are recognized when delivery of the product has occurred. Subscription-based licenses include the right for a customer to use our licenses and receive related support for a specified term, and revenue is recognized pro-rata over the term of the engagement.

Shipping and handling costs: Shipping and handling costs collected from our customers in connection with our sales are recorded as revenue. We record shipping and handling costs as a component of cost of sales at the time the product is shipped.

Warranty: We offer a standard parts coverage warranty for periods varying from one to five years for most of our products. We also offer additional types of warranties to include on-site labor, routine maintenance and event support. In addition, the terms of warranties on some installations can vary from one to 10 years. The specific terms and conditions of these warranties vary primarily depending on the type of product sold. We estimate the costs which may be incurred under the contractual warranty obligations (assurance type warranty) and record a liability in the amount of such estimated costs at the time the revenue is recognized. Factors affecting our estimate of the cost of our warranty obligations include historical experience and expectations of future conditions. We continually assess the adequacy of our recorded warranty accruals and, to the extent we experience any changes in warranty claim activity or costs associated with servicing those claims, our accrued warranty obligation is adjusted accordingly. For service-type warranty contracts, we allocate revenue to this performance obligation, recognize the revenue over time, and recognize costs as incurred.

Long-term receivables and advertising rights: We occasionally sell and install our products at facilities in exchange for the rights to sell or to retain future advertising revenues. For these transactions, we recognize revenue equal to the amount of the present value of the future advertising payments if enough advertising is sold to obtain normal margins on the contract, and we record the related receivable in long-term receivables. We recognize imputed interest as earned.

Property and equipment: In accordance with ASC 360, Property, Plant, and Equipment, property and equipment are stated at cost and depreciated principally on the straight-line method over the following estimated useful lives:



	Years
Buildings and improvements	5 - 40
Machinery and equipment	5 - 7
Office furniture and equipment	3 - 5
Computer software and hardware	3 - 5
Equipment held for rental	2 - 7
Demonstration equipment	3 - 5
Transportation equipment	5 - 7

Leasehold improvements are depreciated over the lesser of the useful life of the asset or the term of the lease.

Property and equipment held for sale: In accordance with ASC 360, Property, Plant, and Equipment, property and equipment held for sale are reported separately when we have a plan to dispose of the asset by sale, it is probable we will find a buyer in the near future, and a change in plan is unlikely. The value is stated at the lower of carrying value or fair value, and no depreciation is charged.

Impairment of Long-Lived Assets: In accordance with ASC 360, Property, Plant, and Equipment, we assess long-lived tangible assets and definite-lived intangible assets for impairment whenever events or changes in circumstances indicate the carrying value may not be recoverable.

When evaluating long-lived assets for potential impairment, we first compare the carrying value of the asset to the asset's estimated future cash flows (undiscounted and without interest charges). If the estimated future cash flows are less than the carrying value of the asset, we calculate an impairment loss. The impairment loss calculation compares the carrying value of the asset to the asset's estimated fair value. We recognize an impairment loss if the amount of the asset's carrying value exceeds the asset's estimated fair value. If we recognize an impairment loss, the adjusted carrying amount of the asset becomes its new cost basis. For a depreciable long-lived asset, the new cost basis will be depreciated (amortized) over the remaining useful life of that asset.

Our impairment loss calculations contain uncertainties because they require management to make assumptions and to apply judgment to estimate future cash flows and asset fair values, including forecasting useful lives of the assets and selecting the discount rate that reflects the risk inherent in future cash flows.

Goodwill and Other Intangible Assets: We account for goodwill and other intangible assets with indefinite lives in accordance with ASC 350, Goodwill and Other. Under these provisions, goodwill is not amortized but is tested for impairment on at least an annual basis. Impairment testing is required more often than annually if an event or circumstance indicates an impairment or a decline in value may have occurred. Such circumstances could include, but are not limited to, a worsening trend of orders and sales without a corresponding way to preserve future cash flows or a significant decline in our stock price. In conducting our impairment testing, we utilize step 0 which allows us to first assess qualitative factors to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying value. If, based on a review of qualitative factors, it is more likely than not that the fair value of a reporting unit is less than its carrying value we perform a quantitative impairment test by comparing the fair value of a reporting unit with its carrying amount. If the carrying value exceeds the fair value, we measure the amount of impairment loss, if any.

If a quantitative analysis is performed, we utilize an income approach to estimate the fair value of each reporting unit. We selected this method because we believe it most appropriately measures our income producing assets. We considered using the market approach and cost approach, but concluded they were not appropriate in valuing our reporting units given the lack of relevant and available market comparisons. The income approach is based on the projected cash flows, which are discounted to their present value using discount rates which consider the timing and risk of the forecasted cash flows. We believe that this approach is appropriate because it provides a fair value estimate based upon the reporting unit's expected long-term operating cash performance. This approach also mitigates the impact of the cyclical trends occurring in the industry. Fair value is estimated using internally developed forecasts and assumptions. The discount rate used is the average estimated value of a market participant’s cost of capital and debt, derived using customary market metrics. Other significant assumptions include terminal value margin rates, future capital expenditures, and changes in future working capital requirements. We also compare and reconcile our overall fair value to our market capitalization. Although there are inherent uncertainties related to the assumptions used and to our application of these assumptions to this analysis, we believe the income approach provides a reasonable estimate of the fair value of our reporting units. The foregoing assumptions to a large degree were consistent with our long-term performance, with limited exceptions. We believe our future investments for capital expenditures as a percent of revenue will remain similar to the historical rates as a percentage of sales in future years. Our investments are expected to relate to equipment replacements and new product line manufacturing equipment needs, and to keep our information technology infrastructure robust. These assumptions could deviate materially from actual results.

Software costs to be sold, leased, or marketed: We follow the provisions of ASC 985, Software, which states software development costs are expensed as incurred until technological feasibility has been established. At such time, such costs are capitalized until the product is made available for release to customers. Additionally, costs incurred after release to customers are expensed as research and development expenses. As of May 2, 2020 and April 27, 2019, capitalized software to be sold, leased, or otherwise marketed had a net book value of $1,357 and $2,523, respectively.

Foreign currency translation: We follow the provisions of ASC 830, Foreign Currency Matters. Our foreign subsidiaries use the local currency of their respective countries as their functional currency. The assets and liabilities of foreign operations are generally translated at the exchange rates in effect at the balance sheet date. The operating results of foreign operations are translated at weighted average exchange rates. The related translation gains or losses are reported as a separate component of shareholders’ equity in accumulated other comprehensive loss.

Income taxes: We account for income taxes in accordance with ASC 740, Income Taxes. We record a tax provision for anticipated tax consequences of the reported results of operations. Deferred tax assets and liabilities are measured using currently enacted tax rates and statutory tax rates applicable to the years in which we expect these temporary differences will affect taxable income. These assets and liabilities are analyzed regularly, and we assess the likelihood that deferred tax assets will be recoverable from future taxable income. When necessary, a valuation allowance is established if it is more likely than not the deferred tax asset will not be realized. We report the net deferred tax asset and liability as a long-term asset or liability. Net deferred assets or liabilities are calculated by combining them based on their jurisdiction.

In addition, because we operate in multiple income tax jurisdictions both within the United States and internationally, the calculation of tax liabilities involves significant judgment in estimating the impact of uncertainties in the application of complex tax laws. Resolution of these uncertainties in a manner inconsistent with our expectations could have a material impact on our financial condition and operating results. See "Note 15. Income Taxes" for further information.

Comprehensive (loss) income: We follow the provisions of ASC 220, Reporting Comprehensive Income, which establishes standards for reporting and displaying comprehensive income and its components, and disclose these components in the consolidated statements of comprehensive income. Comprehensive (loss) income reflects the change in equity of a business enterprise during a period from transactions and other events and circumstances from non-owner sources. For us, comprehensive income represents net income adjusted for cumulative foreign currency translation adjustments and unrealized gains and losses on available-for-sale securities. The foreign currency translation adjustment included in the comprehensive income calculation has not been tax affected, as the investments in foreign affiliates are deemed to be permanent.

Product design and development: We follow the provisions of ASC 730, Research and Development, which states all expenses related to product design and development are charged to operations as incurred. Our product design and development activities include the enhancement of existing products and technologies and the development of new products and technologies.

Advertising costs: In accordance with ASC 720-35, Advertising Costs, we expense advertising costs as incurred. Advertising expenses were $2,184, $2,969 and $2,855 for the fiscal years 2020, 2019 and 2018, respectively.

Earnings per share (“EPS”): We follow the provisions of ASC 260, Earnings Per Share, where basic EPS is computed by dividing income attributable to common shareholders by the weighted average number of common shares outstanding for the period. Diluted EPS reflects the potential dilution which may occur if securities or other obligations to issue common stock were exercised or converted into common stock or resulted in the issuance of common stock which share in our earnings.

The following is a reconciliation of the net income (loss) and common share amounts used in the calculation of basic and diluted EPS for the fiscal years ended May 2, 2020, April 27, 2019 and April 28, 2018:



	Net income (loss)			Shares	Per share income (loss)
For the year ended May 2, 2020:
Basic earnings per share	$	491		45,031	$	0.01
Dilution associated with stock compensation plans	—			285	—
Diluted earnings per share	$	491		45,316	$	0.01
For the year ended April 27, 2019:
Basic loss per share	$	(958	)	44,926	$	(0.02	)
Dilution associated with stock compensation plans	—			—	—
Diluted loss per share	$	(958	)	44,926	$	(0.02	)
For the year ended April 28, 2018:
Basic earnings per share	$	5,562		44,457	$	0.13
Dilution associated with stock compensation plans	—			416	(0.01		)
Diluted earnings per share	$	5,562		44,873	$	0.12

Options outstanding to purchase 2,198, 2,304 and 1,548 shares of common stock with a weighted average exercise price of $9.95, $9.99 and $11.69 for the fiscal years ended May 2, 2020, April 27, 2019 and April 28, 2018, respectively, were not included in the computation of diluted earnings (loss) per share because the effects would be anti-dilutive.

Share-based compensation: We account for share-based compensation in accordance with ASC 718, Compensation-Stock Compensation. Under the fair value recognition provisions of ASC 718, we measure share-based compensation cost at the grant date based on the fair value of the award and recognize the compensation expense over the requisite service period, which is the vesting period. See "Note 13. Shareholders’ Equity and Share-Based Compensation" for additional information and the assumptions we use to calculate the fair value of share-based employee compensation.

Recent Accounting Pronouncements

Accounting Standards Adopted

In February 2016, the Financial Accounting Standards Board ("FASB") issued ASU 2016-02, Leases (Topic 842), which sets out the principles for the recognition, measurement, presentation and disclosure of leases for both parties to a contract (that is, lessees and lessors). ASU 2016-02 requires lessees to apply a dual approach, classifying leases as either finance or operating leases based on the principle of whether or not the lease is effectively a financed purchase of the leased asset by the lessee. This classification will determine whether the lease expense is recognized based on an effective interest method or on a straight-line basis over the term of the lease. A lessee is also required to record a right-of-use asset and a lease liability for all leases with a term greater than 12 months regardless of their classification. ASU 2016-02 requires lessors to account for leases using an approach that is substantially equivalent to existing guidance for sales-type leases, direct financing leases and operating leases. In July 2018, the FASB issued ASU 2018-10, Codification Improvements to Topic 842 (Leases) and ASU 2018-11, Leases (Topic 842), Targeted Improvements, which provide (i) narrow amendments to clarify how to apply certain aspects of the new lease standard, (ii) entities with an additional transition method to adopt the new standard, and (iii) lessors with a practical expedient for separating components of a contract.

We adopted ASU 2016-02 and its related guidance during the first quarter of fiscal 2020 for all agreements existing as of April 28, 2019. We elected the "comparatives under Accounting Standards Codification ("ASC") 840 option" as a transitional method, which allows us to initially apply the new lease requirements at the effective date. Comparative periods were not adjusted and will continue to be reported in accordance with prior lease guidance under ASC 840. We elected the package of practical expedients, which permits us not to reassess our prior conclusions about lease identification, lease classification and initial direct costs. In addition, we have elected the short-term lease recognition whereby we will not recognize operating leases related assets or liabilities for leases with a lease term of less than one year. We have also elected the practical expedient to not separate lease and non-lease components in the lease payments for all asset classes. This adoption did not have an impact on our consolidated statements of operations, shareholders' equity and cash flows, and there was no adjustment to retained earnings. As of April 28, 2019, we recognized a right of use asset for operating leases of $11,101 and a current and non-current lease liability for operating leases of $2,745 and $8,356, respectively. The right of use operating assets are included in the "Investment in affiliates and other assets" line item, the current lease liabilities are included in the "Accrued expenses" line item, and the non-current lease liabilities are included in the "Other long-term obligations" line item in our consolidated balance sheets. See "Note 12. Leases" for more information.

Accounting Standards Not Yet Adopted

In January 2017, the FASB issued ASU 2017-04, Intangibles-Goodwill and Other (Topic 350), which simplifies the subsequent measurement of goodwill by removing the second step of the two-step impairment test. The amendment requires an entity to perform its annual or interim goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount. A goodwill impairment will be the amount by which a reporting unit’s carrying value exceeds its fair value, not to exceed the carrying amount of goodwill. ASU 2017-04 is effective for interim and annual periods beginning after December 15, 2019 and will require adoption on a prospective basis. We are currently evaluating the effect that adopting ASU 2017-04 will have on our consolidated financial statements and related disclosures.

In June 2016, the FASB issued ASU 2016-13, Measurement of Credit Losses on Financial Instruments, which provides guidance regarding the measurement and recognition of credit impairment for certain financial assets. ASU 2016-13 is effective for interim and annual periods beginning after December 15, 2019, with early adoption permitted, and will require adoption on a modified retrospective basis. We are currently evaluating the effect that adopting ASU 2016-13, including all subsequent amendments and improvements to ASC Topic 326 issued by FASB, will have on our consolidated financial statements and related disclosures.

Revenue Recognition Revenue Recognition

12 Months Ended

May 02, 2020

Revenue from Contract with Customer [Abstract]

Revenue Recognition

Note 2. Revenue Recognition

Disaggregation of revenue

In accordance with ASC 606-10-50, we disaggregate revenue from contracts with customers by the type of performance obligation and the timing of revenue recognition. We determine that disaggregating revenue in these categories achieves the disclosure objective to depict how the nature, amount, timing and uncertainty of revenue and cash flows are affected by economic factors and to enable users of financial statements to understand the relationship to each reportable segment.

The following table presents our disaggregation of revenue by segments:



	Fiscal Year 2020
	Commercial		Live Events		High School Park and Recreation		Transportation		International		Total
Type of performance obligation
Unique configuration	$	35,212	$	140,044	$	19,176	$	43,519	$	40,454	$	278,405
Limited configuration	102,847		31,897		74,266		24,588		45,626		279,224
Service and other	14,568		24,650		2,972		2,032		7,081		51,303
	$	152,627	$	196,591	$	96,414	$	70,139	$	93,161	$	608,932
Timing of revenue recognition
Goods/services transferred at a point in time	$	105,096	$	39,521	$	68,582	$	25,157	$	47,345	$	285,701
Goods/services transferred over time	47,531		157,070		27,832		44,982		45,816		323,231
	$	152,627	$	196,591	$	96,414	$	70,139	$	93,161	$	608,932

	Fiscal Year 2019
	Commercial		Live Events		High School Park and Recreation		Transportation		International		Total
Type of performance obligation
Unique configuration	$	25,171	$	119,569	$	21,792	$	38,490	$	44,989	$	250,011
Limited configuration	108,921		30,107		66,825		23,799		42,134		271,786
Service and other	14,741		21,276		2,570		2,102		7,218		47,907
	$	148,833	$	170,952	$	91,187	$	64,391	$	94,341	$	569,704
Timing of revenue recognition
Goods/services transferred at a point in time	$	111,617	$	35,313	$	60,763	$	24,500	$	44,758	$	276,951
Goods/services transferred over time	37,216		135,639		30,424		39,891		49,583		292,753
	$	148,833	$	170,952	$	91,187	$	64,391	$	94,341	$	569,704

See "Note 3. Segment Reporting" for a disaggregation of revenue by geography.

Contract balances

Contract assets represent revenue recognized in excess of amounts billed and include unbilled receivables. Unbilled receivables, which represent an unconditional right to payment subject only to the passage of time, are reclassified to accounts receivable when they are billed according to the contract terms. Contract liabilities represent amounts billed to the clients in excess of revenue recognized to date.

The following table reflects the changes in our contract assets and liabilities:



	May 2, 2020		April 27, 2019		Dollar Change		Percent Change
Contract assets	$	35,467	$	33,704	$	1,763	5.2	%
Contract liabilities - current	50,897		47,178		3,719		7.9
Contract liabilities - non-current	10,707		10,053		654		6.5

The changes in our contract assets and contract liabilities from April 27, 2019 to May 2, 2020 were due to the timing of billing schedules and revenue recognition, which can vary significantly depending on the contractual payment terms and the seasonality of the sports markets. We had no material impairments of contract assets for fiscal 2020.

For service-type warranty contracts, we allocate revenue to this performance obligation, recognize the revenue over time, and recognize costs as incurred. Earned and unearned revenues for these contracts are included in the "Contract assets" and "Contract liabilities". Changes in unearned service-type warranty contracts, net were as follows:



	May 2, 2020			April 27, 2019
Balance at beginning of year	$	24,939		$	20,127
New contracts sold	41,169			41,907
Less: reductions for revenue recognized	(41,167		)	(37,241		)
Foreign currency translation and other	(451		)	146
Balance at end of year	$	24,490		$	24,939

As of April 27, 2019, we had six contracts in progress that were identified as loss contracts, for which we recorded a provision for losses of $2,353 and one remaining contract with loss estimates of $42 as of May 2, 2020. These were included in the "Accrued expenses" line item in our consolidated balance sheets.

During fiscal 2020, we recognized revenue of $45,195 related to our contract liabilities as of April 27, 2019.

Remaining performance obligations

As of May 2, 2020, the aggregate amount of the transaction price allocated to the remaining performance obligations was $267,671. We expect approximately $222,963 of our remaining performance obligations to be recognized over the next 12 months, with the remainder recognized thereafter. Remaining performance obligations related to product and service agreements at May 2, 2020 are $211,863 and $55,808, respectively. Although remaining performance obligations reflect business that is considered to be legally binding, cancellations, deferrals or scope adjustments may occur. Any known project cancellations, revisions to project scope and cost, foreign currency exchange fluctuations and project deferrals are reflected or excluded in the remaining performance obligation balance, as appropriate.

Segment Reporting

12 Months Ended

May 02, 2020

Segment Reporting [Abstract]

Segment Reporting

Note 3. Segment Reporting

We organize and manage our business by the following five segments which meet the definition of reportable segments under ASC 280-10, Segment Reporting: Commercial, Live Events, High School Park and Recreation, Transportation, and International. These segments are based on the customer type or geography and are the same as our business units.

Our Commercial business unit primarily consists of sales of our integrated video display systems, digital billboards, Galaxy^® and Fuelight^™ product lines, and dynamic messaging systems to resellers (primarily sign companies), out-of-home ("OOH") companies, national retailers, quick-serve restaurants, casinos, shopping centers, cruise ships, commercial building owners, and petroleum retailers. Our Live Events business unit primarily consists of sales of integrated scoring and video display systems to college and professional sports facilities and convention centers and sales of our mobile display technology to video rental organizations and other live events type venues. Our High School Park and Recreation business unit primarily consists of sales of scoring systems, Galaxy^® displays and video display systems to primary and secondary education facilities and resellers (primarily sign companies). Our Transportation business unit primarily consists of sales of intelligent transportation system dynamic messaging signs for road management, mass transit, and aviation applications and other electronic signage for advertising and way-finding needs, which includes our Vanguard^® and Galaxy^® product lines and other intelligent transportation systems dynamic message signs, to governmental transportation departments, transportation industry contractors, airlines and other transportation related customers. Our International business unit consists of sales of all product lines outside the United States and Canada. In our International business unit, we focus on product lines related to integrated scoring and video display systems for sports and commercial applications, OOH advertising products, architectural lighting, and transportation related products for sale outside of the United States and Canada to the related type of company, including sports and commercial business facilities, OOH companies, and governmental transportation agencies.

We evaluate segment performance based on operating results through contribution margin, which is comprised of gross profit less selling expense. Gross profit is net sales less cost of sales. Cost of sales consists primarily of inventory and components, logistics related costs including tariffs and duties, consumables, salaries, other employee-related costs, facilities-related costs for manufacturing locations, machinery and equipment maintenance and depreciation, site sub-contractors, warranty costs, enterprise resource and service management systems, inventory obsolescence and write-downs, inventory procurement and handling costs, and other manufacturing, installation, and service delivery expenses. Selling expenses consist primarily of salaries, other employee-related costs, travel and entertainment expenses, facilities-related costs for sales and service offices, bad debt expenses, third-party commissions and expenditures for marketing efforts, including the costs of collateral materials, conventions and trade shows, product demonstrations, customer relationship management systems, and supplies. Contribution margin excludes general and administration expense, product design and development expense, non-operating income and expense and income tax expense. Assets are not allocated to the segments. Depreciation and amortization are allocated to each segment based on various financial measures; however, some depreciation and amortization are corporate in nature and remain unallocated. Our segments follow the same accounting policies as those described in "Note 1. Nature of Business and Summary of Significant Accounting Policies." Some expenses or services are not directly allocable to a sale or segment or the resources and related expenses are shared across business segment areas. These expenses are allocated using estimates and allocation methodologies based on some financial measures and professional judgment. Shared or unabsorbed manufacturing costs are allocated to the business unit benefiting most from that manufacturing location's production capabilities. Shared or unabsorbed costs of domestic field sales and services infrastructure, including most field administrative staff, are allocated to the Commercial, Live Events, High School Park and Recreation, and Transportation business units based on cost of sales. Shared manufacturing, buildings and utilities, and procurement costs are allocated based on payroll dollars, square footage and various other financial measures in the segment analysis. Separate financial information is available and regularly evaluated by our chief operating decision-maker ("CODM"), who is our president and chief executive officer, in making resource allocation decisions for our segments.

We do not maintain information on sales by products; therefore, disclosure of such information is not practical.

The following table sets forth certain financial information for each of our five reporting segments for the periods indicated:



	Year Ended
	May 2, 2020			April 27, 2019			April 28, 2018
Net sales:
Commercial	$	152,627		$	148,833		$	134,535
Live Events	196,591			170,952			236,333
High School Park and Recreation	96,414			91,187			87,627
Transportation	70,139			64,391			59,578
International	93,161			94,341			92,457
	608,932			569,704			610,530

Gross profit:
Commercial	29,246			31,785			26,665
Live Events	39,518			32,164			49,755
High School Park and Recreation	28,874			26,858			29,317
Transportation	23,910			22,525			21,247
International	17,152			16,962			18,685
	138,700			130,294			145,669

Contribution margin: (1)
Commercial	9,897			13,218			7,986
Live Events	26,074			18,484			35,439
High School Park and Recreation	15,341			14,518			18,317
Transportation	19,566			18,260			17,048
International	1,920			1,166			4,119
	72,798			65,646			82,909

Non-allocated operating expenses:
General and administrative	35,193			34,817			34,919
Product design and development	37,772			35,557			35,530
Operating (loss) income	(167		)	(4,728		)	12,460

Nonoperating income (expense):
Interest income	805			1,031			723
Interest expense	(106		)	(160		)	(217		)
Other (expense) income, net	(541		)	(1,087		)	(537		)

(Loss) income before income taxes	(9		)	(4,944		)	12,429
Income tax (benefit) expense	(500		)	(3,986		)	6,867
Net income (loss)	$	491		$	(958	)	$	5,562

Depreciation and amortization:
Commercial	$	3,682		$	4,795		$	6,199
Live Events	5,605			5,194			4,783
High School Park and Recreation	2,025			1,965			1,646
Transportation	1,029			1,102			1,138
International	2,460			2,829			1,163
Unallocated corporate depreciation	2,917			2,750			2,855
	$	17,718		$	18,635		$	17,784

(1) Contribution margin consists of gross profit less selling expense.

No single geographic area comprises a material amount of our net sales or property and equipment, net of accumulated depreciation, other than the United States. The following table presents information about net sales and property and equipment, net of accumulated depreciation, in the United States and elsewhere:



	Year Ended
	May 2, 2020		April 27, 2019		April 28, 2018
Net sales:
United States	$	504,931	$	460,099	$	501,646
Outside United States	104,001		109,605		108,884
	$	608,932	$	569,704	$	610,530
Property and equipment, net of accumulated depreciation:
United States	$	58,422	$	59,192	$	61,206
Outside United States	9,062		6,122		6,853
	$	67,484	$	65,314	$	68,059

We have numerous customers worldwide for sales of our products and services, and no customer accounted for 10% or more of net sales; therefore, we are not economically dependent on a limited number of customers for the sale of our products and services.

We have numerous raw material and component suppliers, and no supplier accounts for 10% or more of our cost of sales; however, we have a number of single-source suppliers that could limit our supply or cause delays in obtaining raw material and components needed in manufacturing.

Marketable Securities

12 Months Ended

May 02, 2020

Marketable Securities [Abstract]

Marketable Securities

Note 4. Marketable Securities

We have a cash management program which provides for the investment of cash balances not used in current operations. We classify our investments in marketable securities as available-for-sale in accordance with the provisions of ASC 320, Investments – Debt and Equity Securities. Marketable securities classified as available-for-sale are reported at fair value with unrealized gains or losses, net of tax, reported in accumulated other comprehensive loss in the consolidated balance sheets. As it relates to fixed income marketable securities, it is not likely we will be required to sell any of these investments before recovery of the entire amortized cost basis. In addition, as of May 2, 2020, we anticipate we will recover the entire amortized cost basis of such fixed income securities, and we have determined no other-than-temporary impairments associated with credit losses were required to be recognized. The cost of securities sold is based on the specific identification method. Where quoted market prices are not available, we use the market price of similar types of securities traded in the market to estimate fair value.

As of May 2, 2020 and April 27, 2019, our available-for-sale securities consisted of the following:



	Amortized Cost		Unrealized Losses			Fair Value
Balance as of May 2, 2020:
Certificates of deposit	$	1,230	$	—		$	1,230
	$	1,230	$	—		$	1,230
Balance as of April 27, 2019:
Certificates of deposit	$	3,464	$	—		$	3,464
U.S. Government securities	10,779		(5		)	10,774
U.S. Government sponsored entities	10,510		(28		)	10,482
Municipal bonds	1,626		(2		)	1,624
	$	26,379	$	(35	)	$	26,344

Realized gains or losses on investments are recorded in our consolidated statements of operations as "Other (expense) income, net." Upon the sale of a security classified as available-for-sale, the security’s specific unrealized gain (loss) is reclassified out of accumulated other comprehensive loss into earnings based on the specific identification method. In the fiscal years ended May 2, 2020 and April 27, 2019, the reclassifications from accumulated other comprehensive loss to net earnings were immaterial.

All available-for-sale securities are classified as current assets, as they are readily available to support our current operating needs. The contractual maturities of available-for-sale debt securities as of May 2, 2020 were as follows:



	Less than 12 months		Total
Certificates of deposit	$	1,230	$	1,230
	$	1,230	$	1,230

Business Combinations	12 Months Ended
Business Combinations	May 02, 2020
Business Combinations [Abstract]
Business Combinations	Note 5. Business Combination AJT Systems, Inc. Acquisition We acquired the net assets of AJT Systems, Inc. ("AJT"), a Florida-based company, on June 21, 2018. The results of its operations have been included in our consolidated financial statements since the date of acquisition. We have not made pro forma disclosures about our acquisition of AJT's net assets because the results of its operations are not material to our consolidated financial statements. AJT is a developer of real-time live to air graphics rendering and video server systems for the broadcast TV industry. This acquisition will allow our organization to grow and strengthen our solution offerings to the market. This acquisition was primarily funded with cash on hand and with payments made over a three-year period.

Sale of Non-Digital Division Assets (Notes)	12 Months Ended
Sale of Non-Digital Division Assets (Notes)	Apr. 27, 2019
Discontinued Operations and Disposal Groups [Abstract]
Disposal Groups, Including Discontinued Operations, Disclosure [Text Block]	Note 6. Sale of Non-Digital Division Assets During fiscal 2018, we sold our non-digital division assets, primarily consisting of inventory, non-digital manufacturing equipment, patented and unpatented technology and know-how, customer lists, and backlog, net of warranty obligations and accounts payable with a net book value of $517. We recorded a gain of $1,267 on the disposal, which was included in cost of sales in the International business unit during fiscal 2018.

Goodwill and Intangible Assets

12 Months Ended

May 02, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Intangible Assets

Note 7. Goodwill and Intangible Assets

We account for goodwill and intangible assets in accordance with ASC 350, Goodwill and Other Intangible Assets.

Goodwill

The changes in the carrying amount of goodwill related to each reportable segment for the fiscal year ended May 2, 2020 were as follows:



	Live Events			Commercial			Transportation			International			Total
Balance as of April 27, 2019:	$	2,276		$	3,218		$	49		$	2,346		$	7,889
Foreign currency translation	(10		)	(74		)	(11		)	(51		)	(146		)
Balance as of May 2, 2020:	$	2,266		$	3,144		$	38		$	2,295		$	7,743

We perform an analysis of goodwill on an annual basis, and test for impairment more frequently if events or changes in circumstances indicate that an asset might be impaired. Our annual analysis is performed during our third quarter of each fiscal year, based on the goodwill amount as of the first business day of our third fiscal quarter. We performed our annual impairment test and concluded no goodwill impairment existed for fiscal years 2020, 2019, and 2018.

In conducting our impairment testing, we utilize step 0 which allows us to first assess qualitative factors to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying value. If, based on a review of qualitative factors, it is more likely than not that the fair value of a reporting unit is less than its carrying value we perform a quantitative impairment test by comparing the fair value of a reporting unit with its carrying amount. If the carrying value exceeds the fair value, we measure the amount of impairment loss, if any.

In March 2020, we began to see impacts from the COVID-19 pandemic that could have a negative impact on our forecasted revenue and profitability. This, along with the decline in our stock price and other market conditions, led us to perform an interim qualitative goodwill impairment analysis. After evaluating our results, events and circumstances, we determined that a quantitative or step 1 analysis was necessary for our International business unit. The results of that analysis indicated no goodwill impairment was necessary.

Intangible Assets

The following table summarizes intangible assets, net, as of May 2, 2020 and April 27, 2019:



	May 2, 2020
	Weighted Average Life (in years)	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Registered trademarks	19.4	$	663	$	183	$	480
Software	3.0	6,247		4,890		1,357
Customer relationships	10.0	2,641		1,135		1,506
Other	1.5	120		109		11
Total amortized intangible assets	6.0	$	9,671	$	6,317	$	3,354

	April 27, 2019
	Weighted Average Life (in years)	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Registered trademarks	19.5	$	679	$	148	$	531
Software	3.0	6,330		3,807		2,523
Customer relationships	10.0	2,720		888		1,832
Other	1.4	123		103		20
Total amortized intangible assets	6.0	$	9,852	$	4,946	$	4,906

In the fiscal years 2020, 2019, and 2018, amortization expense was $1,498, $2,157, and $1,330, respectively. Amortization expenses are included primarily in product design and development and selling expense in the consolidated statements of operations.

As of May 2, 2020, amortization expenses for future periods were estimated to be as follows:



Fiscal years ending	Amount
2021	$	1,483
2022	476
2023	280
2024	280
2025	280
Thereafter	555
Total expected amortization expense	$	3,354

Selected Financial Statement Data

12 Months Ended

May 02, 2020

Selected Financial Statement Data [Abstract]

Selected Financial Statement Data

Note 8. Selected Financial Statement Data

Inventories consisted of the following:



	May 2, 2020		April 27, 2019
Raw materials	$	35,306	$	30,789
Work-in-process	12,102		8,239
Finished goods	39,395		39,804
	$	86,803	$	78,832

Property and equipment, net consisted of the following:



	May 2, 2020		April 27, 2019
Land	$	2,183	$	1,738
Buildings	68,804		66,403
Machinery and equipment	104,157		96,486
Office furniture and equipment	6,151		6,195
Computer software and hardware	53,441		55,460
Equipment held for rental	287		287
Demonstration equipment	8,473		7,422
Transportation equipment	7,944		7,715
	251,440		241,706
Less accumulated depreciation	183,956		176,392
	$	67,484	$	65,314

Our depreciation expense was $16,230, $16,564, and $16,273 for the fiscal years 2020, 2019, and 2018, respectively.

In the fiscal years 2020, 2019, and 2018, the pretax impairment charges for property and equipment were immaterial.

Accrued expenses consisted of the following:



	May 2, 2020		April 27, 2019
Compensation	$	15,967	$	12,766
Taxes, other than income taxes	3,597		2,685
Accrued employee benefits	2,243		3,046
Operating lease liabilities	2,416		—
Short-term accrued expenses	9,270		8,520
Claims liabilities	2,562		2,685
Acquisition-related contingency consideration	571		2,359
	$	36,626	$	32,061

Other (expense) income, net consisted of the following:



	Year Ended
	May 2, 2020			April 27, 2019			April 28, 2018
Foreign currency transaction gains (losses)	$	207		$	(262	)	$	29
Equity in losses of affiliates	(741		)	(844		)	(481		)
Other	(7		)	19			(85		)
	$	(541	)	$	(1,087	)	$	(537	)

Receivables	12 Months Ended
Receivables	May 02, 2020
Receivables [Abstract]
Receivables	Note 9. Receivables We invoice customers based on a billing schedule as established in our contracts. We sometimes have the ability to file a contractor’s lien against the product installed as collateral and to file claims against surety bonds to protect our interest in receivables. Foreign sales are at times secured by irrevocable letters of credit or bank guarantees. Accounts receivable are reported net of an allowance for doubtful accounts of $2,828 and $2,208 at May 2, 2020 and April 27, 2019, respectively. Included in accounts receivable as of May 2, 2020 and April 27, 2019 was $687 and $440, respectively, of retainage on construction-type contracts, all of which is expected to be collected within one year. In some contracts with customers, we agree to installment payments exceeding 12 months. The present value of these contracts is recorded as a receivable as the revenue is recognized in accordance with GAAP, and profit is recognized to the extent the present value is in excess of cost. We generally retain a security interest in the equipment or in the cash flow generated by the equipment until the contract is paid. The present value of long-term contracts, including accrued interest and current maturities, was $4,633 and $3,514 as of May 2, 2020 and April 27, 2019, respectively. Contract receivables bearing annual interest rates of 5.0 to 9.0 percent are due in varying annual installments through August 2024. The face value of long-term receivables was $5,166 as of May 2, 2020 and $3,271 as of April 27, 2019. Our customers' businesses are subject to the fluctuations in global economic cycles and conditions and other business risk factors which may impact their ability to operate their businesses. The performance and financial condition of our customers may cause us to alter our business terms or to cease doing business with a particular customer. Further, the potential impact of the COVID-19 pandemic on their businesses could adversely impact our customers' ability to pay us for work performed and increase our future estimate of credit losses. We evaluated our receivable and contract assets as of May 2, 2020 and reserved for anticipated losses. Due to the uncertainty created by the COVID-19 pandemic, this loss may materially change from this estimate.

Financing Agreements

12 Months Ended

May 02, 2020

Debt Disclosure [Abstract]

Financing Agreements

Note 10. Financing Agreements

On November 15, 2019, we entered into an amendment to extend the maturity date of our credit agreement and a related revolving bank note from November 15, 2019 to November 15, 2022 and to modify certain other terms and financial covenants. The revolving amount of the agreement and note remains at $35,000, including up to $15,000 for commercial and standby letters of credit. The interest rate ranges from the London Interbank Offered Rate ("LIBOR") plus 145 basis points to LIBOR plus 195 basis points depending on the ratio of our interest-bearing debt to EBITDA. EBITDA is defined as net income before deductions for interest expense, income taxes, depreciation and amortization, all as determined in accordance with GAAP. The effective interest rate was 2.0 percent at May 2, 2020. We are assessed a loan fee equal to 0.125 percent per annum on any unused portion of the loan. As of May 2, 2020, $15,000 had been advanced to us under the loan portion of the line of credit, and the balance of letters of credit outstanding was approximately $4,196.

The credit agreement is unsecured and requires us to be in compliance with the following financial ratios:

•

A minimum fixed charge coverage ratio of at least 2 to 1 at the end of any fiscal quarter. The ratio is equal to (a) EBITDA minus the sum of dividends or other distributions (unless the bank approves), share repurchases, a maintenance capital expenditure reserve in the amount of $6,000, and income tax to (b) all principal and interest payments with respect to indebtedness, excluding principal payments on the line of credit; and


•	A ratio of funded debt, excluding any marketing obligations, to EBITDA of greater than 2 to 1 at the end of any fiscal quarter.

We are sometimes required to obtain bank guarantees or other financial instruments for display installations. If we are unable to meet the terms of the arrangement, our customer would draw on the banking arrangement, and the bank would subrogate its loss to Daktronics. As of May 2, 2020, we had $8,894 of such instruments outstanding.

As of May 2, 2020, we were in compliance with all applicable bank loan covenants.

Share Repurchase Program Share Repurchase Program	12 Months Ended
Share Repurchase Program Share Repurchase Program	May 02, 2020
Class of Stock Disclosures [Abstract]
Treasury Stock [Text Block]	Note 11. Share Repurchase Program On June 17, 2016, our Board of Directors approved a stock repurchase program under which we may purchase up to $40,000 of the Company's outstanding shares of common stock. Under this program, we may repurchase shares from time to time in open market transactions and in privately negotiated transactions based on business, market, applicable legal requirements and other considerations. The repurchase program does not require the repurchase of a specific number of shares and may be terminated at any time. During fiscal 2018 and 2019, we had no repurchases of shares of our outstanding common stock. During fiscal 2020, we repurchased 1,039 shares of common stock at a total cost of $5,636. As of May 2, 2020, we had $32,539 of remaining capacity under our current share repurchase program. As part of our COVID-19 response, on April 1, 2020, our Board of Directors voted to suspend stock repurchases under our share repurchase program for the foreseeable future.

Leases (Notes)

12 Months Ended

May 02, 2020

Leases [Abstract]

Lessee, Operating Leases [Text Block]

Note 12. Leases

We lease facilities and various equipment to manufacture products and provide employee collaboration space and tools. These are all classified as operating leases and have initial lease terms ranging from one to five years. These operating leases do not contain material residual value guarantees or material restrictive covenants. Our lease in Sioux Falls, South Dakota has a purchase option. We do not have any financing leases.

We determine if an arrangement is a lease at inception. Leases with an initial term of 12 months or less are not recorded on the balance sheet. Right-of-use assets represent our right to use an underlying asset for the lease term, and lease liabilities represent our obligation to make lease payments arising from the lease. Operating lease right-of-use assets and liabilities are recognized at commencement date based on the present value of lease payments over the lease term. As we are generally not able to determine the rate implicit in our leases, we use the incremental borrowing rate based on the information available at the commencement date in determining the present value of future lease payments. The operating lease right-of-use asset includes any prepaid lease payments and initial direct costs and excludes any lease incentives and impairments. Some of our leases include options to extend the term, which is only included in the right-of-use assets and lease liability calculation when it is reasonably certain that we will exercise that option. We have lease agreements with lease and non-lease components, and we have elected to account for all asset classes as a single lease component. Our operating leases also typically require payment of real estate taxes, insurance, and common area maintenance. These components comprise the majority of our variable lease cost and are excluded from the present value of our lease obligations. In instances where they are fixed, they are included due to our election to combine lease and non-lease components. Our total variable lease costs are immaterial.

Operating lease cost is recognized on a straight-line basis over the lease term, and short-term lease cost is recognized when paid. During fiscal 2020, the operating lease cost included in cost of sales and operating expenses in the consolidated statements of operations was $2,325 and $1,116, respectively. Operating lease cost includes short-term leases, which are immaterial.

As of May 2, 2020, the weighted average remaining lease term and discount rate related to operating leases was 5.0 years and 3.4%.

Supplemental unaudited cash flow information related to operating leases include:



	Fiscal Year 2020
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$	3,340

Future minimum operating lease payments as of, and subsequent to, May 2, 2020 under ASC 842 are as follows:



	Operating Leases⁽¹⁾
Fiscal years ending
2021	$	2,675
2022	1,984
2023	1,209
2024	1,085
2025	931
Thereafter	1,467
Total lease payments	9,351
Less imputed interest	(780		)
Total lease liabilities	$	8,571

(1) Includes $3,879 to extend the term of the lease for our Sioux Falls, South Dakota manufacturing facility.

Shareholders' Equity and Share-Based Compensation

12 Months Ended

May 02, 2020

Share-based Payment Arrangement [Abstract]

Shareholders' Equity and Share-Based Compensation

Note 13. Shareholders’ Equity and Share-Based Compensation

Common stock: Our 120,000 authorized shares consist of 115,000 shares of common stock and 5,000 shares of “undesignated stock.” Our Board of Directors has the power to authorize and issue any or all of the shares of undesignated stock without shareholder approval, including the authority to establish the rights and preferences of the undesignated stock.

Each outstanding share of our common stock includes one preferred share purchase right. Each right entitles the registered holder to purchase from us one one-thousandth of one share of our Series A Junior Participating Preferred Stock at an initial exercise price of $25 per right, subject to adjustment and the terms of the shareholder rights agreement under which the dividend was declared and paid. The rights become exercisable immediately after the earlier of (i) 10 business days following a public announcement that a person or group has acquired beneficial ownership of 20 percent or more of our outstanding common shares (subject to certain exceptions) or (ii) 10 business days following the commencement or announcement of an intention to make a tender offer or exchange offer for our common shares, the consummation of which would result in the beneficial ownership by a person or group of 20 percent or more of our outstanding common shares. The rights expire on November 19, 2021, which date may be extended by our Board of Directors subject to certain additional conditions.

Stock incentive plans: During fiscal 2016, we established the Daktronics, Inc. 2015 Stock Incentive Plan (“2015 Plan”) and ceased granting options under the 2007 Stock Incentive Plan ("2007 Plan"). The 2015 Plan provides for the issuance of stock-based awards, including stock options, restricted stock, restricted stock units and deferred stock, to employees, directors and consultants. Stock options issued to employees under the 2007 Plan and 2015 Plan generally have a 10-year life, an exercise price equal to the market value on the grant date and a five-year annual vesting period. Stock options granted to independent directors under these plans have a seven-year life and an exercise price equal to the fair market value on the date of grant. Stock options granted to independent directors vest in one year, provided that the directors remain on the Board. The restricted stock granted to independent directors vests in one year, provided that the directors remain on the Board. Restricted stock units are granted to employees and have a five-year annual vesting period. As with stock options, restricted stock and restricted stock unit ownership cannot be transferred during the vesting period.

At May 2, 2020, the aggregate number of shares available for future grants under the 2015 Plan for stock options and restricted stock awards was 1,176 shares. Shares of common stock subject to all stock awards granted under the 2015 Plan are counted as one share of stock for each share of stock subject to the award. Although the 2007 Plan remains in effect for options outstanding that were granted under the 2007 Plan until the earlier of the exercise of the options or their expiration or termination without being exercised, no new options can be granted under the 2007 Plan.

Restricted stock and restricted stock units: We issue restricted stock to our non-employee directors and restricted stock units to employees. Restricted stock issued to non-employee directors are participating securities and receive dividends prior to vesting. Unvested restricted stock will terminate and be forfeited upon termination of employment or service. The fair value of restricted stock and our restricted stock unit awards are measured on the grant date based on the market value of our common stock. The related compensation expense as calculated under ASC 718, net of estimated forfeitures, is recognized over the applicable vesting period. Unrecognized compensation expense related to the restricted stock and restricted stock unit awards was approximately $2,197 at May 2, 2020, which is expected to be recognized over a weighted-average period of 2.7 years. The total fair value of restricted stock vested was $1,415, $1,530, and $1,274 in fiscal years 2020, 2019, and 2018, respectively.

A summary of nonvested restricted stock and restricted stock units for fiscal years 2020, 2019, and 2018 is as follows:



	Year Ended
	May 2, 2020				April 27, 2019				April 28, 2018
	Number of Nonvested Shares		Weighted Average Grant Date Fair Value Per Share		Number of Nonvested Shares		Weighted Average Grant Date Fair Value Per Share		Number of Nonvested Shares		Weighted Average Grant Date Fair Value Per Share
Outstanding at beginning of year	444		$	7.58	437		$	8.48	402		$	8.69
Granted	186		7.03		181		6.79		178		8.46
Vested	(173	)	8.10		(169	)	9.05		(141	)	9.06
Forfeited	(8	)	7.37		(5	)	7.74		(2	)	8.93
Outstanding at end of year	449		$	7.16	444		$	7.58	437		$	8.48

Stock Options: We issue incentive stock options to our employees and non-qualified stock options to our independent directors. A summary of stock option activity under our 2007 Plan and 2015 Plan during the fiscal year ended May 2, 2020 is as follows:



	Stock Options		Weighted Average Exercise Price Per Share		Weighted Average Remaining Contractual Life (Years)	Aggregate Intrinsic Value
Outstanding at April 27, 2019	2,202		$	10.03	4.41	$	—
Granted	182		7.47		—	—
Canceled or forfeited	(263	)	8.85		—	—
Exercised	—		—		—	—
Outstanding at May 2, 2020	2,121		$	9.96	4.38	$	—

Shares vested and expected to vest	2,098		$	9.98	4.34	$	—
Exercisable at May 2, 2020	1,593		$	10.50	3.17	$	—

The aggregate intrinsic value of stock options represents the difference between the exercise price of stock options and the fair market value of the underlying common stock for all in-the-money options. We define in-the-money options at May 2, 2020 as options having exercise prices lower than the $4.45 per share market price of our common stock on that date. There were in-the-money options to purchase 0 shares exercisable at May 2, 2020. The total intrinsic value of options exercised during fiscal years 2020, 2019, and 2018 was $0, $98, and $65, respectively. The total fair value of stock options vested was $566, $667, and $977 for fiscal years 2020, 2019, and 2018, respectively.

We estimate the fair value of stock options granted using the Black-Scholes option valuation model. We recognize the fair value of the stock options on a straight-line basis as compensation expense. All options are recognized over the requisite service periods of the awards, which are generally the vesting periods.

The Black-Scholes option-pricing model was developed for use in estimating the fair value of traded options which have no vesting restrictions and are fully transferable. In addition, option valuation models require the input of highly subjective assumptions, including the expected stock price volatility. ASC 718 requires us to estimate forfeitures at the time of grant and revise those estimates in subsequent periods if actual forfeitures differ from those estimates. We use historical data to estimate pre-vesting option forfeitures and record share-based compensation expense only for those awards expected to vest. The following factors are the significant assumptions used in the computation of the fair value of options:

Expected life. The expected life of options granted represents the period of time they are expected to be outstanding. We estimate the expected life of options granted based on historical exercise patterns, which we believe are representative of future behavior. We have examined our historical pattern of option exercises in an effort to determine if there were any discernible patterns of activity based on certain demographic characteristics. Demographic characteristics tested included age, salary level, job level and geographic location. We have determined there were no meaningful differences in option exercise activity based on the demographic characteristics tested.

Expected volatility. We estimate the volatility of our common stock at the date of grant based on historical volatility consistent with ASC 718 and Securities and Exchange Commission ("SEC") Staff Accounting Bulletin No. 107, Share Based Payments.

Risk-free interest rate. The rate is based on the U.S. Treasury zero-coupon yield curve on the grant date for a term similar to the expected life of the options.

Dividend yield. We use an expected dividend yield consistent with our historical dividend yield pattern.

The following table provides the weighted-average fair value of options granted and the related assumptions used in the Black-Scholes model:



	Year Ended
	May 2, 2020			April 27, 2019			April 28, 2018
Fair value of options granted	$	1.99		$	2.16		$	2.82
Risk-free interest rate	1.51		%	2.83		%	1.95		%
Expected dividend rate	3.50		%	3.37		%	3.27		%
Expected volatility	37.55		%	38.58		%	42.51		%
Expected life of option	6.94 years			6.83 years			6.83 years

Employee stock purchase plan: We have an employee stock purchase plan (“ESPP”), which enables employees after six months of continuous employment to elect, in advance and semi-annually, to contribute up to 15 percent of their compensation, subject to certain limitations, toward the purchase of our common stock at a purchase price equal to 85 percent of the lower of the fair market value of the common stock on the first or last day of the participation period. The ESPP requires participants to hold any shares purchased under the ESPP for a minimum period of one year after the date of purchase. Compensation expense recognized on shares issued under our ESPP is based on the value of a traded option to purchase shares of our stock at a 15 percent discount to the stock price. The total number of shares reserved under the ESPP is 4,000. The number of shares of common stock issued under the ESPP totaled 453, 241, and 223 shares in fiscal 2020, 2019, and 2018, respectively. The number of shares of common stock reserved for future employee purchases under the ESPP totaled 979 shares at May 2, 2020. The ESPP is intended to qualify under Section 423 of the Internal Revenue Code of 1986 (the "Code").

Total share-based compensation expense: As of May 2, 2020, there was $3,096 of total unrecognized compensation cost related to nonvested share-based compensation arrangements granted under all equity compensation plans. Total unrecognized compensation cost will be adjusted for future changes in estimated forfeitures. We expect to recognize the cost over a weighted-average period of 2.9 years.

The following table presents a summary of the share-based compensation expense by equity type as follows:



	Year Ended
	May 2, 2020		April 27, 2019		April 28, 2018
Stock options	$	492	$	593	$	763
Restricted stock and stock units	1,341		1,446		1,442
Employee stock purchase plans	432		440		430
	$	2,265	$	2,479	$	2,635

A summary of the share-based compensation expense for stock options, restricted stock, restricted stock units and shares issued under the ESPP for fiscal years 2020, 2019, and 2018 is as follows:



	Year Ended
	May 2, 2020		April 27, 2019		April 28, 2018
Cost of sales	$	514	$	578	$	619
Selling	572		625		644
General and administrative	717		772		851
Product design and development	462		504		521
	$	2,265	$	2,479	$	2,635

We received $0 in cash from option exercises under all share-based payment arrangements for the fiscal year ended May 2, 2020. The tax (expense) benefit related to non-qualified options and restricted stock units under all share-based payment arrangements totaled $(92), $(52), and $9 for fiscal years 2020, 2019, and 2018, respectively.

Retirement Benefits	12 Months Ended
Retirement Benefits	May 02, 2020
Retirement Benefits [Abstract]
Retirement Benefits	Note 14. Retirement Benefits We sponsor a 401(k) savings plan providing benefits for substantially all United States-based employees of Daktronics, Inc. and its subsidiaries, subject to certain Internal Revenue Service ("IRS") limits. We made matching cash contributions equal to 50 percent of the employee's qualifying contribution up to six percent of such employee's compensation; however, effective April 1, 2020, we eliminated our matching contribution as one of our cost savings initiatives. Employees are eligible to participate in the 401(k) savings plan upon completion of three months of continuous service if they have attained the age of 21. We contributed $2,917, $2,754 and $2,612 for matches to the plan for fiscal years 2020, 2019, and 2018, respectively.

Income Taxes

12 Months Ended

May 02, 2020

Income Tax Disclosure [Abstract]

Income Taxes

Note 15. Income Taxes

The following tables reflect the significant components of our income tax provision. The pretax income attributable to domestic and foreign operations was as follows:



	Year Ended
	May 2, 2020			April 27, 2019			April 28, 2018
Domestic	$	(4,187	)	$	(8,402	)	$	9,235
Foreign	4,178			3,458			3,194
(Loss) income before income taxes	$	(9	)	$	(4,944	)	$	12,429

Income tax (benefit) expense consisted of the following:



	Year Ended
	May 2, 2020			April 27, 2019			April 28, 2018
Current:
Federal	$	625		$	(2,142	)	$	1,646
State	297			384			868
Foreign	761			1,151			1,205
Deferred:
Federal	(2,028		)	(2,725		)	3,693
State	(321		)	(390		)	27
Foreign	166			(264		)	(572		)
	$	(500	)	$	(3,986	)	$	6,867

The reconciliation of the provision for income taxes and the amount computed by applying the federal statutory rate to income before income taxes is as follows:



	Year Ended
	May 2, 2020			April 27, 2019			April 28, 2018
Computed income tax (benefit) expense at federal statutory rates	$	(2	)	$	(1,038	)	$	3,779
Change in uncertain tax positions	4			(2,600		)	65
Research and development tax credit	(1,621		)	(1,278		)	(1,598		)
Other, net	(241		)	587			559
Change in valuation allowances	482			(471		)	(486		)
GILTI	149			391			—
Base Erosion Anti-Abuse Tax (BEAT)	301			—			—
Stock compensation	318			308			336
Meals and entertainment	305			248			333
Dividends paid to retirement plan	(111		)	(158		)	(238		)
State taxes, net of federal benefit	(84		)	25			592
Impact of Tax Act	—			—			3,819
Domestic production activities deduction	—			—			(294		)
	$	(500	)	$	(3,986	)	$	6,867

The effective income tax rate for fiscal 2020 was impacted due to the tax benefit of permanent tax credits reduced by a valuation allowance placed on equity investments in proportion to a small pre-tax book loss which results in an abnormal looking tax rate.

During fiscal 2019, our effective income tax rate was impacted due to a tax benefit of a book loss plus permanent credits and deductions, the release of unrecognized tax benefits, and the reversal of a valuation allowance related to foreign net operating loss carryforwards.

The effective income tax rate for fiscal 2018 was higher than the federal statutory rate primarily due to the impacts of the Tax Act signed into law on December 22, 2017, which included a re-measurement of deferred taxes resulting in an impact to tax expense and an estimated one-time transition tax on certain undistributed earnings for our foreign subsidiaries. The Tax Act reduced the federal normal statutory rate from 35 percent to 21 percent; however, since we are a fiscal year tax filer, a blended rate of 30.4 percent was used for fiscal year 2018.

The components of the net deferred tax assets were as follows:



	May 2, 2020			April 27, 2019
Deferred tax assets:
Accrued warranty obligations	$	6,202		$	5,912
Vacation accrual	1,753			1,571
Deferred maintenance revenue	987			716
Allowance for excess and obsolete inventory	1,318			1,340
Legal reserve	503			260
Equity compensation	396			486
Allowance for doubtful accounts	546			402
Inventory capitalization	822			567
Accrued compensation and benefits	539			549
Net operating loss carry forwards	919			1,059
Research and development tax credit carry forwards	1,975			1,299
Lease accounting - lease liability	2,099			—
Other	1,035			1,647
Total deferred tax assets	19,094			15,808
Valuation allowance	(1,189		)	(893		)
Net deferred tax assets	17,905			14,915

Deferred tax liabilities:
Property and equipment	(2,141		)	(3,100		)
Lease accounting - right of use asset	(2,103		)	—
Prepaid expenses	(440		)	(476		)
Intangible assets	(317		)	(623		)
Unrealized gain on foreign currency exchange	(17		)	(6		)
Other	(68		)	(75		)
Total deferred tax liabilities	(5,086		)	(4,280		)
Net deferred tax asset	$	12,819		$	10,635

The classification of the net deferred tax assets in the accompanying consolidated balance sheets is:



	May 2, 2020			April 27, 2019
Non-current assets	$	13,271		$	11,168
Non-current liabilities	(452		)	(533		)
	$	12,819		$	10,635

The summary of changes in the amounts related to unrecognized uncertain tax benefits are:



	May 2, 2020			April 27, 2019
Balance at beginning of year	$	578		$	3,178
Gross increases related to prior period tax positions	17			13
Gross decreases related to prior period tax positions	(2		)	(18		)
Gross increases related to current period tax positions	148			146
Lapse of statute of limitations	(159		)	(2,741		)
Balance at end of year	$	582		$	578

All of our unrecognized tax benefits would have an impact on the effective tax rate if recognized. It is reasonably possible that the amount of unrecognized tax benefits could change due to one or more of the following events occurring in the next 12 months: expiring statutes, audit activity, tax payments, or competent authority proceedings. A statute of limitations relating to $138 of the unrecognized tax benefits (including interest) expires in the next 12 months. The benefit will be recognized if the statute lapses with no further action taken by regulators. Additionally, we recognized the release of $159 in unrecognized tax benefits related to the lapse of a statute of limitations in fiscal 2020.

Interest and penalties incurred associated with uncertain tax positions are included in the "Income tax expense" line item in our consolidated statements of operations. Accrued interest and penalties are included in the related tax liability line item in our consolidated balance sheets of $30 and $26 as of May 2, 2020 and April 27, 2019, respectively.

As of May 2, 2020, we had foreign net operating loss (“NOL”) carryforwards of approximately $4,832 primarily related to our operations in Belgium and Ireland, which have indefinite lives. A deferred tax asset has been recorded for all NOL carryforwards totaling approximately $919. However, due to uncertainty in future taxable income, a valuation allowance totaling approximately $627 has been recorded in Belgium. If sufficient evidence of our ability to generate future taxable income in the jurisdictions in which we currently maintain a valuation allowance causes us to determine that our deferred tax assets are more likely than not realizable, we would release our valuation allowance, which would result in an income tax benefit being recorded in our consolidated statements of operations.

Additional tax information:

We are subject to U.S. federal income tax as well as income taxes of multiple state and foreign jurisdictions. Fiscal years 2017, 2018 and 2019 remain open to federal tax examinations, and fiscal years 2016, 2017, 2018 and 2019 remain open for state income tax examinations. Certain subsidiaries are also subject to income tax in several foreign jurisdictions which have open tax years varying by jurisdiction beginning in fiscal 2008. In the event of any future tax assessments, we have elected to record the income taxes and any related interest and penalties as income tax expense in our consolidated statement of operations.

As of May 2, 2020, we had no deferred tax liability recognized relating to our investment in foreign subsidiaries where the earnings have been indefinitely reinvested. The Tax Act generally eliminates U.S. federal income taxes on dividends from foreign subsidiaries, and, as a result, the accumulated undistributed earnings would be subject only to other taxes, such as withholding taxes and state income taxes, on the distribution of such earnings. No additional withholding or income taxes have been provided for any remaining undistributed foreign earnings not subject to the one-time deemed repatriation tax, as it is our intention for these amounts to continue to be indefinitely reinvested in foreign operations in all of our non-U.S. jurisdictions.

On March 27, 2020, the Coronavirus Aid, Relief, and Economic Security Act ("CARES Act") was enacted in response to the COVID-19 global pandemic. The CARES Act includes provisions such as: a deferral of the employer portion of certain payroll taxes, refundable payroll tax credits, alternative minimum tax credit refunds, modifications to the net interest deduction limitations and technical corrections to tax depreciation methods for qualified improvement property, and permitting NOL incurred in tax years 2018, 2019, and 2020 (our fiscal years 2019, 2020, and 2021) to be carried back to each of the five preceding taxable years to generate a refund of previously paid income taxes. We are evaluating the specific rules, guidance, and procedures allowed by the provisions of the CARES Act. Some of these provisions do not apply to our income tax results; however, we are currently participating in the payment deferral of the employer portion of certain payroll taxes.

Cash Flow Information

12 Months Ended

May 02, 2020

Supplemental Cash Flow Information [Abstract]

Cash Flow Information

Note 16. Cash Flow Information

The changes in operating assets and liabilities consisted of the following:



	Year Ended
	May 2, 2020			April 27, 2019			April 28, 2018
(Increase) decrease:
Account receivable	$	(7,461	)	$	10,856		$	2,266
Long-term receivables	(1,173		)	329			1,548
Inventories	(8,347		)	(4,076		)	(8,517		)
Contract assets	(1,931		)	(3,040		)	5,911
Prepaid expenses and other current assets	(1,403		)	472			(1,252		)
Income taxes receivables	533			4,250			(4,747		)
Investment in affiliates and other assets	(3,137		)	48			413
Increase (decrease):
Accounts payable	2,377			(2,747		)	(2,573		)
Contract liabilities	4,548			10,774			3,480
Accrued expenses	6,745			4,631			3,472
Warranty obligations	273			(4,393		)	346
Long-term warranty obligations	883			(1,079		)	1,729
Income taxes payable	390			(3,023		)	(592		)
Long-term marketing obligations and other payables	(387		)	(1,116		)	379
	$	(8,090	)	$	11,886		$	1,863

Supplemental disclosures of cash flow information consisted of the following:



	Year Ended
	May 2, 2020		April 27, 2019			April 28, 2018
Cash payments for:
Interest	$	46	$	177		$	193
Income taxes, net of refunds	977		(1,934		)	8,937

Supplemental schedule of non-cash investing and financing activities consisted of the following:



	Year Ended
	May 2, 2020		April 27, 2019		April 28, 2018
Demonstration equipment transferred to inventory	$	10	$	97	$	72
Purchases of property and equipment included in accounts payable	1,951		1,106		1,983
Contributions of common stock under the ESPP	2,311		1,650		1,682

Fair Value Measurement

12 Months Ended

May 02, 2020

Fair Value Disclosures [Abstract]

Fair Value Measurement

Note 17. Fair Value Measurement

ASC 820, Fair Value Measurement, defines fair value as the price that would be received to sell an asset or paid to transfer a liability (an exit price) in an orderly transaction between market participants at the measurement date. It also establishes a fair value hierarchy which requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. The fair value hierarchy within ASC 820 distinguishes between the following three Levels of inputs which may be utilized when measuring fair value:

Level 1 - Quoted prices in active markets for identical assets or liabilities.

Level 2 - Observable inputs other than quoted prices included within Level 1 for the assets or liabilities, either directly or indirectly (for example, quoted market prices for similar assets and liabilities in active markets or quoted market prices for identical assets or liabilities in markets not considered to be active, inputs other than quoted prices that are observable for the asset or liability, or market-corroborated input).

Level 3 - Unobservable inputs supported by little or no market activity based on our own assumptions used to measure assets and liabilities.

The fair values for fixed-rate long-term receivables are estimated using a discounted cash flow analysis based on interest rates currently being offered for contracts with similar terms to customers with similar credit quality. The carrying amounts reported in our consolidated balance sheets for long-term receivables approximate fair value and have been categorized as a Level 2 fair value measurement. Fair values for fixed-rate long-term marketing obligations are estimated using a discounted cash flow calculation applying interest rates currently being offered for debt with similar terms and underlying collateral. The total carrying value of long-term marketing obligations as reported in our consolidated balance sheets within other long-term obligations approximates fair value and has been categorized as a Level 2 fair value measurement.

The following table sets forth by Level within the fair value hierarchy our financial assets and liabilities that were accounted for at fair value on a recurring basis at May 2, 2020 and April 27, 2019 according to the valuation techniques we used to determine their fair values. There have been no transfers of assets or liabilities among the fair value hierarchies presented.



	Fair Value Measurements
	Level 1		Level 2			Level 3			Total
Balance as of May 2, 2020:
Cash and cash equivalents	$	40,398	$	—		$	—		$	40,398
Restricted cash	14		—			—			14
Available-for-sale securities:
Certificates of deposit	—		1,230			—			1,230
Derivatives - asset position	—		261			—			261
Derivatives - liability position	—		(17		)	—			(17		)
Acquisition-related contingent consideration	—		—			(761		)	(761		)
	$	40,412	$	1,474		$	(761	)	$	41,125
Balance as of April 27, 2019:
Cash and cash equivalents	$	35,383	$	—		$	—		$	35,383
Restricted cash	359		—			—			359
Available-for-sale securities:
Certificates of deposit	—		3,464			—			3,464
U.S. Government securities	10,774		—			—			10,774
U.S. Government sponsored entities	—		10,482			—			10,482
Municipal bonds	—		1,624			—			1,624
Derivatives - asset position	—		91			—			91
Derivatives - liability position	—		(4		)	—			(4		)
Acquisition-related contingent consideration	—		—			(3,065		)	(3,065		)
	$	46,516	$	15,657		$	(3,065	)	$	59,108

A roll forward of the Level 3 contingent liabilities, both short- and long-term, for the fiscal year ended May 2, 2020 is as follows:



Acquisition-related contingent consideration as of April 27, 2019	$	3,065
Additions	100
Settlements	(2,491		)
Interest	50
Foreign currency translation	37
Acquisition-related contingent consideration as of May 2, 2020	$	761

The following methods and assumptions were used to estimate the fair value of each class of financial instrument. There have been no changes in the valuation techniques used by us to value our financial instruments.

Cash and cash equivalents: Consists of cash on hand in bank deposits and highly liquid investments, primarily money market accounts. The fair value was measured using quoted market prices in active markets. The carrying amount approximates fair value.

Restricted cash: Consists of cash and cash equivalents held in bank deposit accounts to secure issuances of foreign bank guarantees. The fair value of restricted cash was measured using quoted market prices in active markets. The carrying amount approximates fair value.

Certificates of deposit: Consists of time deposit accounts with original maturities of less than three years and various yields. The fair value of these securities was measured based on valuations observed in less active markets than Level 1 investments from a third-party financial institution. The carrying amount approximates fair value.

U.S. Government securities: Consists of U.S. Government treasury bills, notes, and bonds with original maturities of less than three years and various yields. The fair value of these securities was measured using quoted market prices in active markets.

U.S. Government sponsored entities: Consists of Fannie Mae and Federal Home Loan Bank investment grade debt securities trading with sufficient frequency and volume to enable us to obtain pricing information on an ongoing basis. The fair value of these securities was measured based on valuations observed in less active markets than Level 1 investments. The contractual maturities of these investments vary from one month to three years.

Municipal bonds: Consists of investment grade municipal bonds trading with sufficient frequency and volume to enable us to obtain pricing information on an ongoing basis. The contractual maturities of these investments vary from two to three years. The fair value of these bonds was measured based on valuations observed in less active markets than Level 1 investments.

Derivatives – currency forward contracts: Consists of currency forward contracts trading with sufficient frequency and volume to enable us to obtain pricing information on an ongoing basis. The fair value of these securities was measured based on a valuation from a third-party bank. See "Note 18. Derivative Financial Instruments" for more information regarding our derivatives.

Contingent liabilities: Consists of the fair value of liabilities measured on expected future payments relating to business acquisitions if conditions are met. The contingent liabilities were calculated by estimating the discounted present value of expected future payments as of the acquisition date and subsequently at the end of each reporting period. The fair value measurement is based on significant unobservable inputs as of May 2, 2020 and April 27, 2019. The contingent liabilities are presented in the "Accrued expenses" and "Other long-term obligations" line items in our consolidated balance sheets.

Non-recurring measurements: The fair value measurement standard also applies to certain non-financial assets and liabilities measured at fair value on a nonrecurring basis. Certain long-lived assets such as goodwill, intangible assets and property and equipment are measured at fair value on a nonrecurring basis and are subject to fair value adjustments in certain circumstances, such as when there is evidence of impairment.

Other measurements using fair value: Some of our financial instruments, such as accounts receivable, long-term receivables, prepaid expense and other assets, contract assets and liabilities, accounts payable, warranty obligations, and other long-term obligations, are reflected in the consolidated balance sheets at carrying value, which approximates fair value due to their short-term nature.

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details

Derivative Financial Instruments

12 Months Ended

May 02, 2020

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivative Financial Instruments

Note 18. Derivative Financial Instruments

We utilize derivative financial instruments to manage the economic impact of fluctuations in currency exchange rates on those transactions denominated in currencies other than our functional currency, which is the U.S. dollar. We enter into currency forward contracts to manage these economic risks. We account for all derivatives in the consolidated balance sheets within accounts receivable or accounts payable measured at fair value, and changes in fair values are recognized in earnings unless specific hedge accounting criteria are met for cash flow or net investment hedges. As of May 2, 2020 and April 27, 2019, we had not designated any of our derivative instruments as accounting hedges, and thus we recorded the changes in fair value in the "Other (expense) income, net" line item in the consolidated statements of operations.

The foreign currency exchange contracts in aggregated notional amounts in place to exchange U.S. dollars at May 2, 2020 and April 27, 2019 were as follows:



	May 2, 2020		April 27, 2019
	U.S. Dollars	Foreign Currency	U.S. Dollars	Foreign Currency
Foreign Currency Exchange Forward Contracts:
U.S. Dollars/Australian Dollars	2,235	3,323	2,688	3,772
U.S. Dollars/Canadian Dollars	452	648	625	821
U.S. Dollars/British Pounds	3,160	2,424	3,547	2,680
U.S. Dollars/Euros	1,881	1,689	—	—
U.S. Dollars/Swiss Franc	—	—	927	925
U.S. Dollars/Malaysian Ringgit	—	—	60	246

As of May 2, 2020, there was an asset and liability of $261 and $17, respectively, and as of April 27, 2019, there was an asset and liability of $91 and $4, respectively, representing the fair value of foreign currency exchange forward contracts, which were determined using Level 2 inputs from a third-party bank. As of May 2, 2020, all contracts mature within 11 months.

Commitments and Contingencies

12 Months Ended

May 02, 2020

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

Note 19. Commitments and Contingencies

Litigation: We are a party to legal proceedings and claims which arise during the ordinary course of business. We review our legal proceedings and claims, regulatory reviews and inspections, and other legal matters on an ongoing basis and follow appropriate accounting guidance when making accrual and disclosure decisions. We establish accruals for those contingencies when the incurrence of a loss is probable and can be reasonably estimated, and we disclose the amount accrued and the amount of a reasonably possible loss in excess of the amount accrued, if such disclosure is necessary for our financial statements to not be misleading. We do not record an accrual when the likelihood of loss being incurred is probable, but the amount cannot be reasonably estimated, or when the loss is believed to be only reasonably possible or remote, although disclosures will be made for material matters as required by ASC 450-20, Contingencies - Loss Contingencies. Our assessment of whether a loss is reasonably possible or probable is based on our assessment and consultation with legal counsel regarding the ultimate outcome of the matter following all appeals.

As of May 2, 2020 and April 27, 2019, $2,072 and $1,072, respectively, were included in the "Accrued expenses" line item in our consolidated balance sheets for a probable and reasonably estimated cost to settle a patent litigation claim. The costs are included in cost of sales in the High School Park and Recreation business unit for each fiscal year.

For other unresolved legal proceedings or claims, we do not believe there is a reasonable probability that any material loss would be incurred. Accordingly, no material accrual or disclosure of a potential range of loss has been made related to these matters. We do not expect the ultimate liability of these unresolved legal proceedings or claims to have a material effect on our financial position, liquidity or capital resources.

Warranties: See "Note 1. Nature of Business and Summary of Significant Accounting Policies" for more information regarding warranties. During fiscal 2016, we discovered a warranty issue caused by a mechanical device failure within a module for displays primarily in our OOH application built prior to fiscal 2013. During fiscal 2020, 2019, and 2018, we recognized warranty expense and estimated equipment service agreement losses for probable and reasonably estimated costs to remediate this issue of $0, $2,427, and $4,539, respectively. Our contractual warranty arrangements have expired for products with this issue, and we do not expect material changes to the equipment service agreement accrual. The additional warranty expense in fiscal 2018 is primarily based on our decision to preserve our market leadership and for customer relationship purposes in certain cases beyond our contractual obligations.

Changes in our warranty obligation for the fiscal years ended May 2, 2020 and April 27, 2019 consisted of the following:



	May 2, 2020			April 27, 2019
Beginning accrued warranty obligations	$	24,470		$	29,953
Warranties issued during the period	10,629			9,239
Settlements made during the period	(9,209		)	(16,715		)
Changes in accrued warranty obligations for pre-existing warranties during the period, including expirations	(266		)	1,993
Ending accrued warranty obligations	$	25,624		$	24,470

Performance guarantees: We have entered into standby letters of credit and surety bonds with financial institutions relating to the guarantee of our future performance on contracts, primarily construction-type contracts. As of May 2, 2020, we had outstanding letters of credit and surety bonds in the amount of $13,090 and $18,212, respectively. Performance guarantees are issued to certain customers to guarantee the operation and installation of the equipment and our ability to complete a contract. These performance guarantees have various terms but are generally one year. We enter into written agreements with our customers, and those agreements often contain indemnification provisions that require us to make the customer whole if certain acts or omissions by us cause the customer financial loss. We make efforts to negotiate reasonable caps and limitations on the recovery of such damages. As of May 2, 2020, we were not aware of any indemnification claim from a customer.

Purchase commitments: From time to time, we commit to purchase inventory, advertising, cloud-based information systems, information technology maintenance and support services, and various other products and services over periods that extend beyond one year. As of May 2, 2020, we were obligated under the following unconditional purchase commitments:



Fiscal years ending	Amount
2021	$	4,775
2022	2,750
2023	1,754
2024	148
2025	113
Thereafter	40
	$	9,580

Investment in affiliates commitments: We agreed to invest an additional $5,000 in XDC by February 2021 if certain conditions are met.

Subsequent Events	12 Months Ended
Subsequent Events	May 02, 2020
Subsequent Events [Abstract]
Subsequent Events	Note 20. Subsequent Events During fiscal year 2020, we offered special voluntary retirement and voluntary exit offering ("Offering") and on May 13, 2020, we conducted a reduction in force to adjust our capacity and reduce on-going expenses due to the uncertainties created by the COVID-19 pandemic. Under the Offering, employees had until June 2020 to choose to participate. During the first quarter of fiscal 2021, 57 employees agreed to participate and will complete employment by the end of June 2020. The approximate cost of this program was $892. Under the reduction in force, employment was terminated with 98 employees with severance totaling $1,365. These costs are fiscal 2021 expenses.

Quarterly Financial Data (Unaudited)

12 Months Ended

May 02, 2020

Quarterly Financial Information Disclosure [Abstract]

Quarterly Financial Data (Unaudited)

Note 21. Quarterly Financial Data (Unaudited)

The following table presents summarized quarterly financial data:



	Fiscal Year 2020⁽¹⁾⁽²⁾
	August 3, 2019		November 2, 2019		February 1, 2020			May 2, 2020
Net sales	$	180,256	$	174,911	$	127,657		$	126,108
Gross profit	45,505		40,087		24,482			28,626
Net income (loss)	7,030		7,274		(12,734		)	(1,079		)
Basic earnings (loss) per share	0.16		0.16		(0.28		)	(0.02		)
Diluted earnings (loss) per share	0.16		0.16		(0.28		)	(0.02		)

	Fiscal Year 2019^(2)(3)(4)
	July 28, 2018		October 27, 2018		January 26, 2019			April 27, 2019
Net sales	$	154,188	$	172,692	$	115,069		$	127,755
Gross profit	38,247		42,757		24,869			24,421
Net income (loss)	4,574		8,606		(3,319		)	(10,819		)
Basic earnings (loss) per share	0.10		0.19		(0.07		)	(0.24		)
Diluted earnings (loss) per share	0.10		0.19		(0.07		)	(0.24		)


(1)	Fiscal year 2020 consisted of 53 weeks.


(2)	Includes approximately $4,927 of additional costs for tariffs during fiscal 2020 and $6,300 of additional costs for price changes and tariffs during fiscal 2019.


(3)	The financial data for the quarter ended October 27, 2018 includes the net assets acquired of AJT Systems, Inc. See "Note 5. Business Combination" for further information.

(4) The financial data for the quarter ended January 26, 2019 includes the release of $2,775 in unrecognized tax benefits related to the lapse of a statute of limitations and the release of $480 for a valuation allowance reversal related to foreign net operating loss carryforwards. See "Note 15. Income Taxes" for further information.

SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS

12 Months Ended

May 02, 2020

SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]

SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS

DAKTRONICS, INC. AND SUBSIDIARIES SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS (in thousands)

			Additions
Description	Balance at Beginning of Year		Charged to Costs and Expenses		Charged to Other Accounts		Deductions				Balance at End of Year
For the year ended May 2, 2020:
Deducted from asset accounts:
Allowance for doubtful accounts for trade receivables	$	2,208	$	1,461	$	—	$	(841	)	(a)	$	2,828
For the year ended April 27, 2019:
Deducted from asset accounts:
Allowance for doubtful accounts for trade receivables	2,151		1,620		—		(1,563		)	(a)	2,208
For the year ended April 28, 2018:
Deducted from asset accounts:
Allowance for doubtful accounts for trade receivables	2,610		1,451		—		(1,910		)	(a)	2,151

(a) Write-off of uncollected accounts, net of collections.

Nature of Business and Summary of Significant Accounting Policies (Policies)

12 Months Ended

May 02, 2020

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Nature of business

Fiscal year

Principles of consolidation

Principles of consolidation: The consolidated financial statements include Daktronics, Inc. and its subsidiaries. All intercompany accounts and transactions are eliminated in consolidation.

Investments in affiliates

Use of estimates

Cash and cash equivalents

Restricted cash

Restricted cash: Restricted cash consists of cash and cash equivalents held in bank deposit accounts to secure issuances of foreign bank guarantees.

Inventories

Allowance for doubtful accounts

Revenue from Contract with Customer

Our accounting policies and estimates as a result of adopting ASU 2014-09, Revenue from Contracts with Customers (Topic 606), are as follows:

Our material performance obligation types include:

The time between contract order and project completion is typically less than 12 months but may extend longer depending on the amount of custom work and customers’ delivery needs.

Revenue Recognition, Long-term Receivables and Advertising Rights [Policy Text Block]

Property and equipment



	Years
Buildings and improvements	5 - 40
Machinery and equipment	5 - 7
Office furniture and equipment	3 - 5
Computer software and hardware	3 - 5
Equipment held for rental	2 - 7
Demonstration equipment	3 - 5
Transportation equipment	5 - 7

Leasehold improvements are depreciated over the lesser of the useful life of the asset or the term of the lease.

Impairment of long-lived assets

Goodwill and other intangible assets

Software cost to be sold, leased, or marketed

Foreign currency translation

Income taxes

Comprehensive (loss) income

Product design and development

Advertising costs

Advertising costs: In accordance with ASC 720-35, Advertising Costs, we expense advertising costs as incurred.

Earnings per share (EPS)

Share-based compensation

Recent accounting pronouncements

Recent Accounting Pronouncements

Accounting Standards Adopted

Accounting Standards Not Yet Adopted

Nature of Business and Summary of Significant Accounting Policies (Tables)

12 Months Ended

May 02, 2020

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Equity Method Investments

Summarized financial information for equity method investments consist of the following:



	Year Ended
	May 2, 2020			April 27, 2019			April 28, 2018
Balance sheet data:
Current assets	$	10,593		$	192
Non-current assets	4,266			2,626
Current liabilities	2,755			839
Non-current liabilities	4,086			2,599
Income statement data:
Net loss	(1,383		)	(2,168		)	(1,493	)

Schedule of Cash and Cash Equivalents



	May 2, 2020		April 27, 2019		April 28, 2018
Cash and cash equivalents	$	40,398	$	35,383	$	29,727
Restricted cash	14		359		28
Total cash, cash equivalents, and restricted cash shown in the consolidated statement of cash flows	$	40,412	$	35,742	$	29,755

Restrictions on Cash and Cash Equivalents



	May 2, 2020		April 27, 2019		April 28, 2018
Cash and cash equivalents	$	40,398	$	35,383	$	29,727
Restricted cash	14		359		28
Total cash, cash equivalents, and restricted cash shown in the consolidated statement of cash flows	$	40,412	$	35,742	$	29,755

Schedule of Property and Equipment

In accordance with ASC 360, Property, Plant, and Equipment, property and equipment are stated at cost and depreciated principally on the straight-line method over the following estimated useful lives:



	Years
Buildings and improvements	5 - 40
Machinery and equipment	5 - 7
Office furniture and equipment	3 - 5
Computer software and hardware	3 - 5
Equipment held for rental	2 - 7
Demonstration equipment	3 - 5
Transportation equipment	5 - 7

Property and equipment, net consisted of the following:



	May 2, 2020		April 27, 2019
Land	$	2,183	$	1,738
Buildings	68,804		66,403
Machinery and equipment	104,157		96,486
Office furniture and equipment	6,151		6,195
Computer software and hardware	53,441		55,460
Equipment held for rental	287		287
Demonstration equipment	8,473		7,422
Transportation equipment	7,944		7,715
	251,440		241,706
Less accumulated depreciation	183,956		176,392
	$	67,484	$	65,314

Schedule of Earnings Per Share Reconciliation



	Net income (loss)			Shares	Per share income (loss)
For the year ended May 2, 2020:
Basic earnings per share	$	491		45,031	$	0.01
Dilution associated with stock compensation plans	—			285	—
Diluted earnings per share	$	491		45,316	$	0.01
For the year ended April 27, 2019:
Basic loss per share	$	(958	)	44,926	$	(0.02	)
Dilution associated with stock compensation plans	—			—	—
Diluted loss per share	$	(958	)	44,926	$	(0.02	)
For the year ended April 28, 2018:
Basic earnings per share	$	5,562		44,457	$	0.13
Dilution associated with stock compensation plans	—			416	(0.01		)
Diluted earnings per share	$	5,562		44,873	$	0.12

Revenue Recognition (Tables)

12 Months Ended

May 02, 2020

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue

The following table presents our disaggregation of revenue by segments:



	Fiscal Year 2020
	Commercial		Live Events		High School Park and Recreation		Transportation		International		Total
Type of performance obligation
Unique configuration	$	35,212	$	140,044	$	19,176	$	43,519	$	40,454	$	278,405
Limited configuration	102,847		31,897		74,266		24,588		45,626		279,224
Service and other	14,568		24,650		2,972		2,032		7,081		51,303
	$	152,627	$	196,591	$	96,414	$	70,139	$	93,161	$	608,932
Timing of revenue recognition
Goods/services transferred at a point in time	$	105,096	$	39,521	$	68,582	$	25,157	$	47,345	$	285,701
Goods/services transferred over time	47,531		157,070		27,832		44,982		45,816		323,231
	$	152,627	$	196,591	$	96,414	$	70,139	$	93,161	$	608,932

	Fiscal Year 2019
	Commercial		Live Events		High School Park and Recreation		Transportation		International		Total
Type of performance obligation
Unique configuration	$	25,171	$	119,569	$	21,792	$	38,490	$	44,989	$	250,011
Limited configuration	108,921		30,107		66,825		23,799		42,134		271,786
Service and other	14,741		21,276		2,570		2,102		7,218		47,907
	$	148,833	$	170,952	$	91,187	$	64,391	$	94,341	$	569,704
Timing of revenue recognition
Goods/services transferred at a point in time	$	111,617	$	35,313	$	60,763	$	24,500	$	44,758	$	276,951
Goods/services transferred over time	37,216		135,639		30,424		39,891		49,583		292,753
	$	148,833	$	170,952	$	91,187	$	64,391	$	94,341	$	569,704

Contract with Customer, Asset and Liability

The following table reflects the changes in our contract assets and liabilities:



	May 2, 2020		April 27, 2019		Dollar Change		Percent Change
Contract assets	$	35,467	$	33,704	$	1,763	5.2	%
Contract liabilities - current	50,897		47,178		3,719		7.9
Contract liabilities - non-current	10,707		10,053		654		6.5

Deferred Revenue, by Arrangement

Changes in unearned service-type warranty contracts, net were as follows:



	May 2, 2020			April 27, 2019
Balance at beginning of year	$	24,939		$	20,127
New contracts sold	41,169			41,907
Less: reductions for revenue recognized	(41,167		)	(37,241		)
Foreign currency translation and other	(451		)	146
Balance at end of year	$	24,490		$	24,939

Segment Reporting (Tables)

12 Months Ended

May 02, 2020

Segment Reporting [Abstract]

Schedule of Segment Reporting Information, by Segment

The following table sets forth certain financial information for each of our five reporting segments for the periods indicated:



	Year Ended
	May 2, 2020			April 27, 2019			April 28, 2018
Net sales:
Commercial	$	152,627		$	148,833		$	134,535
Live Events	196,591			170,952			236,333
High School Park and Recreation	96,414			91,187			87,627
Transportation	70,139			64,391			59,578
International	93,161			94,341			92,457
	608,932			569,704			610,530

Gross profit:
Commercial	29,246			31,785			26,665
Live Events	39,518			32,164			49,755
High School Park and Recreation	28,874			26,858			29,317
Transportation	23,910			22,525			21,247
International	17,152			16,962			18,685
	138,700			130,294			145,669

Contribution margin: (1)
Commercial	9,897			13,218			7,986
Live Events	26,074			18,484			35,439
High School Park and Recreation	15,341			14,518			18,317
Transportation	19,566			18,260			17,048
International	1,920			1,166			4,119
	72,798			65,646			82,909

Non-allocated operating expenses:
General and administrative	35,193			34,817			34,919
Product design and development	37,772			35,557			35,530
Operating (loss) income	(167		)	(4,728		)	12,460

Nonoperating income (expense):
Interest income	805			1,031			723
Interest expense	(106		)	(160		)	(217		)
Other (expense) income, net	(541		)	(1,087		)	(537		)

(Loss) income before income taxes	(9		)	(4,944		)	12,429
Income tax (benefit) expense	(500		)	(3,986		)	6,867
Net income (loss)	$	491		$	(958	)	$	5,562

Depreciation and amortization:
Commercial	$	3,682		$	4,795		$	6,199
Live Events	5,605			5,194			4,783
High School Park and Recreation	2,025			1,965			1,646
Transportation	1,029			1,102			1,138
International	2,460			2,829			1,163
Unallocated corporate depreciation	2,917			2,750			2,855
	$	17,718		$	18,635		$	17,784

(1) Contribution margin consists of gross profit less selling expense.

Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas

The following table presents information about net sales and property and equipment, net of accumulated depreciation, in the United States and elsewhere:



	Year Ended
	May 2, 2020		April 27, 2019		April 28, 2018
Net sales:
United States	$	504,931	$	460,099	$	501,646
Outside United States	104,001		109,605		108,884
	$	608,932	$	569,704	$	610,530
Property and equipment, net of accumulated depreciation:
United States	$	58,422	$	59,192	$	61,206
Outside United States	9,062		6,122		6,853
	$	67,484	$	65,314	$	68,059

Marketable Securities (Tables)

12 Months Ended

May 02, 2020

Marketable Securities [Abstract]

Available-for-sale Securities

As of May 2, 2020 and April 27, 2019, our available-for-sale securities consisted of the following:



	Amortized Cost		Unrealized Losses			Fair Value
Balance as of May 2, 2020:
Certificates of deposit	$	1,230	$	—		$	1,230
	$	1,230	$	—		$	1,230
Balance as of April 27, 2019:
Certificates of deposit	$	3,464	$	—		$	3,464
U.S. Government securities	10,779		(5		)	10,774
U.S. Government sponsored entities	10,510		(28		)	10,482
Municipal bonds	1,626		(2		)	1,624
	$	26,379	$	(35	)	$	26,344

Investments Classified by Contractual Maturity Date

The contractual maturities of available-for-sale debt securities as of May 2, 2020 were as follows:



	Less than 12 months		Total
Certificates of deposit	$	1,230	$	1,230
	$	1,230	$	1,230

Goodwill and Intangible Assets (Tables)

12 Months Ended

May 02, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill

The changes in the carrying amount of goodwill related to each reportable segment for the fiscal year ended May 2, 2020 were as follows:



	Live Events			Commercial			Transportation			International			Total
Balance as of April 27, 2019:	$	2,276		$	3,218		$	49		$	2,346		$	7,889
Foreign currency translation	(10		)	(74		)	(11		)	(51		)	(146		)
Balance as of May 2, 2020:	$	2,266		$	3,144		$	38		$	2,295		$	7,743

Schedule of Definite-Lived Intangible and Indefinite-Lived Intangible Assets

The following table summarizes intangible assets, net, as of May 2, 2020 and April 27, 2019:



	May 2, 2020
	Weighted Average Life (in years)	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Registered trademarks	19.4	$	663	$	183	$	480
Software	3.0	6,247		4,890		1,357
Customer relationships	10.0	2,641		1,135		1,506
Other	1.5	120		109		11
Total amortized intangible assets	6.0	$	9,671	$	6,317	$	3,354

	April 27, 2019
	Weighted Average Life (in years)	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Registered trademarks	19.5	$	679	$	148	$	531
Software	3.0	6,330		3,807		2,523
Customer relationships	10.0	2,720		888		1,832
Other	1.4	123		103		20
Total amortized intangible assets	6.0	$	9,852	$	4,946	$	4,906

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense

As of May 2, 2020, amortization expenses for future periods were estimated to be as follows:



Fiscal years ending	Amount
2021	$	1,483
2022	476
2023	280
2024	280
2025	280
Thereafter	555
Total expected amortization expense	$	3,354

Selected Financial Statement Data (Tables)

12 Months Ended

May 02, 2020

Selected Financial Statement Data [Abstract]

Schedule of Inventories

Inventories consisted of the following:



	May 2, 2020		April 27, 2019
Raw materials	$	35,306	$	30,789
Work-in-process	12,102		8,239
Finished goods	39,395		39,804
	$	86,803	$	78,832

Schedule of Property and Equipment



	Years
Buildings and improvements	5 - 40
Machinery and equipment	5 - 7
Office furniture and equipment	3 - 5
Computer software and hardware	3 - 5
Equipment held for rental	2 - 7
Demonstration equipment	3 - 5
Transportation equipment	5 - 7

Property and equipment, net consisted of the following:



	May 2, 2020		April 27, 2019
Land	$	2,183	$	1,738
Buildings	68,804		66,403
Machinery and equipment	104,157		96,486
Office furniture and equipment	6,151		6,195
Computer software and hardware	53,441		55,460
Equipment held for rental	287		287
Demonstration equipment	8,473		7,422
Transportation equipment	7,944		7,715
	251,440		241,706
Less accumulated depreciation	183,956		176,392
	$	67,484	$	65,314

Schedule of Accrued Expenses

Accrued expenses consisted of the following:



	May 2, 2020		April 27, 2019
Compensation	$	15,967	$	12,766
Taxes, other than income taxes	3,597		2,685
Accrued employee benefits	2,243		3,046
Operating lease liabilities	2,416		—
Short-term accrued expenses	9,270		8,520
Claims liabilities	2,562		2,685
Acquisition-related contingency consideration	571		2,359
	$	36,626	$	32,061

Schedule of Other (Expense) Income

Other (expense) income, net consisted of the following:



	Year Ended
	May 2, 2020			April 27, 2019			April 28, 2018
Foreign currency transaction gains (losses)	$	207		$	(262	)	$	29
Equity in losses of affiliates	(741		)	(844		)	(481		)
Other	(7		)	19			(85		)
	$	(541	)	$	(1,087	)	$	(537	)

Leases (Tables)

12 Months Ended

May 02, 2020

Leases [Abstract]

Supplemental Cash Flow Information

Supplemental unaudited cash flow information related to operating leases include:



	Fiscal Year 2020
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$	3,340

Lease Liability Schedule

Future minimum operating lease payments as of, and subsequent to, May 2, 2020 under ASC 842 are as follows:



	Operating Leases⁽¹⁾
Fiscal years ending
2021	$	2,675
2022	1,984
2023	1,209
2024	1,085
2025	931
Thereafter	1,467
Total lease payments	9,351
Less imputed interest	(780		)
Total lease liabilities	$	8,571

(1) Includes $3,879 to extend the term of the lease for our Sioux Falls, South Dakota manufacturing facility.

Shareholders' Equity and Share-Based Compensation (Tables)

12 Months Ended

May 02, 2020

Share-based Payment Arrangement [Abstract]

Schedule of Nonvested Restricted Stock and Restricted Stock Units Activity

A summary of nonvested restricted stock and restricted stock units for fiscal years 2020, 2019, and 2018 is as follows:



	Year Ended
	May 2, 2020				April 27, 2019				April 28, 2018
	Number of Nonvested Shares		Weighted Average Grant Date Fair Value Per Share		Number of Nonvested Shares		Weighted Average Grant Date Fair Value Per Share		Number of Nonvested Shares		Weighted Average Grant Date Fair Value Per Share
Outstanding at beginning of year	444		$	7.58	437		$	8.48	402		$	8.69
Granted	186		7.03		181		6.79		178		8.46
Vested	(173	)	8.10		(169	)	9.05		(141	)	9.06
Forfeited	(8	)	7.37		(5	)	7.74		(2	)	8.93
Outstanding at end of year	449		$	7.16	444		$	7.58	437		$	8.48

Schedule of Stock Option Award Activity

A summary of stock option activity under our 2007 Plan and 2015 Plan during the fiscal year ended May 2, 2020 is as follows:



	Stock Options		Weighted Average Exercise Price Per Share		Weighted Average Remaining Contractual Life (Years)	Aggregate Intrinsic Value
Outstanding at April 27, 2019	2,202		$	10.03	4.41	$	—
Granted	182		7.47		—	—
Canceled or forfeited	(263	)	8.85		—	—
Exercised	—		—		—	—
Outstanding at May 2, 2020	2,121		$	9.96	4.38	$	—

Shares vested and expected to vest	2,098		$	9.98	4.34	$	—
Exercisable at May 2, 2020	1,593		$	10.50	3.17	$	—

Schedule of Weighted-Average Assumptions

The following table provides the weighted-average fair value of options granted and the related assumptions used in the Black-Scholes model:



	Year Ended
	May 2, 2020			April 27, 2019			April 28, 2018
Fair value of options granted	$	1.99		$	2.16		$	2.82
Risk-free interest rate	1.51		%	2.83		%	1.95		%
Expected dividend rate	3.50		%	3.37		%	3.27		%
Expected volatility	37.55		%	38.58		%	42.51		%
Expected life of option	6.94 years			6.83 years			6.83 years

Schedule of Share-Based Compensation Expense by Award Type

The following table presents a summary of the share-based compensation expense by equity type as follows:



	Year Ended
	May 2, 2020		April 27, 2019		April 28, 2018
Stock options	$	492	$	593	$	763
Restricted stock and stock units	1,341		1,446		1,442
Employee stock purchase plans	432		440		430
	$	2,265	$	2,479	$	2,635

Schedule of Share-Based Compensation Expense

A summary of the share-based compensation expense for stock options, restricted stock, restricted stock units and shares issued under the ESPP for fiscal years 2020, 2019, and 2018 is as follows:



	Year Ended
	May 2, 2020		April 27, 2019		April 28, 2018
Cost of sales	$	514	$	578	$	619
Selling	572		625		644
General and administrative	717		772		851
Product design and development	462		504		521
	$	2,265	$	2,479	$	2,635

Income Taxes (Tables)

12 Months Ended

May 02, 2020

Income Tax Disclosure [Abstract]

Schedule of Pretax Income Domestic and Foreign

The pretax income attributable to domestic and foreign operations was as follows:



	Year Ended
	May 2, 2020			April 27, 2019			April 28, 2018
Domestic	$	(4,187	)	$	(8,402	)	$	9,235
Foreign	4,178			3,458			3,194
(Loss) income before income taxes	$	(9	)	$	(4,944	)	$	12,429

Schedule of Components of Income Tax Expense

Income tax (benefit) expense consisted of the following:



	Year Ended
	May 2, 2020			April 27, 2019			April 28, 2018
Current:
Federal	$	625		$	(2,142	)	$	1,646
State	297			384			868
Foreign	761			1,151			1,205
Deferred:
Federal	(2,028		)	(2,725		)	3,693
State	(321		)	(390		)	27
Foreign	166			(264		)	(572		)
	$	(500	)	$	(3,986	)	$	6,867

Schedule of Effective Income Tax Rate Reconciliation

The reconciliation of the provision for income taxes and the amount computed by applying the federal statutory rate to income before income taxes is as follows:



	Year Ended
	May 2, 2020			April 27, 2019			April 28, 2018
Computed income tax (benefit) expense at federal statutory rates	$	(2	)	$	(1,038	)	$	3,779
Change in uncertain tax positions	4			(2,600		)	65
Research and development tax credit	(1,621		)	(1,278		)	(1,598		)
Other, net	(241		)	587			559
Change in valuation allowances	482			(471		)	(486		)
GILTI	149			391			—
Base Erosion Anti-Abuse Tax (BEAT)	301			—			—
Stock compensation	318			308			336
Meals and entertainment	305			248			333
Dividends paid to retirement plan	(111		)	(158		)	(238		)
State taxes, net of federal benefit	(84		)	25			592
Impact of Tax Act	—			—			3,819
Domestic production activities deduction	—			—			(294		)
	$	(500	)	$	(3,986	)	$	6,867

Schedule of Deferred Tax Assets and Liabilities

The components of the net deferred tax assets were as follows:



	May 2, 2020			April 27, 2019
Deferred tax assets:
Accrued warranty obligations	$	6,202		$	5,912
Vacation accrual	1,753			1,571
Deferred maintenance revenue	987			716
Allowance for excess and obsolete inventory	1,318			1,340
Legal reserve	503			260
Equity compensation	396			486
Allowance for doubtful accounts	546			402
Inventory capitalization	822			567
Accrued compensation and benefits	539			549
Net operating loss carry forwards	919			1,059
Research and development tax credit carry forwards	1,975			1,299
Lease accounting - lease liability	2,099			—
Other	1,035			1,647
Total deferred tax assets	19,094			15,808
Valuation allowance	(1,189		)	(893		)
Net deferred tax assets	17,905			14,915

Deferred tax liabilities:
Property and equipment	(2,141		)	(3,100		)
Lease accounting - right of use asset	(2,103		)	—
Prepaid expenses	(440		)	(476		)
Intangible assets	(317		)	(623		)
Unrealized gain on foreign currency exchange	(17		)	(6		)
Other	(68		)	(75		)
Total deferred tax liabilities	(5,086		)	(4,280		)
Net deferred tax asset	$	12,819		$	10,635

Schedule of Deferred Tax Assets and Liabilities Current and Non Current

The classification of the net deferred tax assets in the accompanying consolidated balance sheets is:



	May 2, 2020			April 27, 2019
Non-current assets	$	13,271		$	11,168
Non-current liabilities	(452		)	(533		)
	$	12,819		$	10,635

Reconciliation of Unrecognized Tax Benefits

The summary of changes in the amounts related to unrecognized uncertain tax benefits are:



	May 2, 2020			April 27, 2019
Balance at beginning of year	$	578		$	3,178
Gross increases related to prior period tax positions	17			13
Gross decreases related to prior period tax positions	(2		)	(18		)
Gross increases related to current period tax positions	148			146
Lapse of statute of limitations	(159		)	(2,741		)
Balance at end of year	$	582		$	578

Cash Flow Information (Tables)

12 Months Ended

May 02, 2020

Supplemental Cash Flow Information [Abstract]

Summary of Changes in Operating Assets and Liabilities

The changes in operating assets and liabilities consisted of the following:



	Year Ended
	May 2, 2020			April 27, 2019			April 28, 2018
(Increase) decrease:
Account receivable	$	(7,461	)	$	10,856		$	2,266
Long-term receivables	(1,173		)	329			1,548
Inventories	(8,347		)	(4,076		)	(8,517		)
Contract assets	(1,931		)	(3,040		)	5,911
Prepaid expenses and other current assets	(1,403		)	472			(1,252		)
Income taxes receivables	533			4,250			(4,747		)
Investment in affiliates and other assets	(3,137		)	48			413
Increase (decrease):
Accounts payable	2,377			(2,747		)	(2,573		)
Contract liabilities	4,548			10,774			3,480
Accrued expenses	6,745			4,631			3,472
Warranty obligations	273			(4,393		)	346
Long-term warranty obligations	883			(1,079		)	1,729
Income taxes payable	390			(3,023		)	(592		)
Long-term marketing obligations and other payables	(387		)	(1,116		)	379
	$	(8,090	)	$	11,886		$	1,863

Schedule of Supplemental Cash Flow Information

Supplemental disclosures of cash flow information consisted of the following:



	Year Ended
	May 2, 2020		April 27, 2019			April 28, 2018
Cash payments for:
Interest	$	46	$	177		$	193
Income taxes, net of refunds	977		(1,934		)	8,937

Schedule of Non-Cash Investing and Financing Activities

Supplemental schedule of non-cash investing and financing activities consisted of the following:



	Year Ended
	May 2, 2020		April 27, 2019		April 28, 2018
Demonstration equipment transferred to inventory	$	10	$	97	$	72
Purchases of property and equipment included in accounts payable	1,951		1,106		1,983
Contributions of common stock under the ESPP	2,311		1,650		1,682

Fair Value Measurement (Tables)

12 Months Ended

May 02, 2020

Fair Value Disclosures [Abstract]

Schedule of Fair Value



	Fair Value Measurements
	Level 1		Level 2			Level 3			Total
Balance as of May 2, 2020:
Cash and cash equivalents	$	40,398	$	—		$	—		$	40,398
Restricted cash	14		—			—			14
Available-for-sale securities:
Certificates of deposit	—		1,230			—			1,230
Derivatives - asset position	—		261			—			261
Derivatives - liability position	—		(17		)	—			(17		)
Acquisition-related contingent consideration	—		—			(761		)	(761		)
	$	40,412	$	1,474		$	(761	)	$	41,125
Balance as of April 27, 2019:
Cash and cash equivalents	$	35,383	$	—		$	—		$	35,383
Restricted cash	359		—			—			359
Available-for-sale securities:
Certificates of deposit	—		3,464			—			3,464
U.S. Government securities	10,774		—			—			10,774
U.S. Government sponsored entities	—		10,482			—			10,482
Municipal bonds	—		1,624			—			1,624
Derivatives - asset position	—		91			—			91
Derivatives - liability position	—		(4		)	—			(4		)
Acquisition-related contingent consideration	—		—			(3,065		)	(3,065		)
	$	46,516	$	15,657		$	(3,065	)	$	59,108

Rollforward of Level 3 Contingent Consideration Liabilities

A roll forward of the Level 3 contingent liabilities, both short- and long-term, for the fiscal year ended May 2, 2020 is as follows:



Acquisition-related contingent consideration as of April 27, 2019	$	3,065
Additions	100
Settlements	(2,491		)
Interest	50
Foreign currency translation	37
Acquisition-related contingent consideration as of May 2, 2020	$	761

Derivative Financial Instruments (Tables)

12 Months Ended

May 02, 2020

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Notional Amounts of Outstanding Derivative Positions

The foreign currency exchange contracts in aggregated notional amounts in place to exchange U.S. dollars at May 2, 2020 and April 27, 2019 were as follows:



	May 2, 2020		April 27, 2019
	U.S. Dollars	Foreign Currency	U.S. Dollars	Foreign Currency
Foreign Currency Exchange Forward Contracts:
U.S. Dollars/Australian Dollars	2,235	3,323	2,688	3,772
U.S. Dollars/Canadian Dollars	452	648	625	821
U.S. Dollars/British Pounds	3,160	2,424	3,547	2,680
U.S. Dollars/Euros	1,881	1,689	—	—
U.S. Dollars/Swiss Franc	—	—	927	925
U.S. Dollars/Malaysian Ringgit	—	—	60	246

Commitments and Contingencies (Tables)

12 Months Ended

May 02, 2020

Commitments and Contingencies Disclosure [Abstract]

Schedule of Product Warranty Liability

Changes in our warranty obligation for the fiscal years ended May 2, 2020 and April 27, 2019 consisted of the following:



	May 2, 2020			April 27, 2019
Beginning accrued warranty obligations	$	24,470		$	29,953
Warranties issued during the period	10,629			9,239
Settlements made during the period	(9,209		)	(16,715		)
Changes in accrued warranty obligations for pre-existing warranties during the period, including expirations	(266		)	1,993
Ending accrued warranty obligations	$	25,624		$	24,470

Long-term Purchase Commitment

As of May 2, 2020, we were obligated under the following unconditional purchase commitments:



Fiscal years ending	Amount
2021	$	4,775
2022	2,750
2023	1,754
2024	148
2025	113
Thereafter	40
	$	9,580

Quarterly Financial Data (Unaudited) (Tables)

12 Months Ended

May 02, 2020

Quarterly Financial Information Disclosure [Abstract]

Schedule of Quarterly Financial Data

The following table presents summarized quarterly financial data:



	Fiscal Year 2020⁽¹⁾⁽²⁾
	August 3, 2019		November 2, 2019		February 1, 2020			May 2, 2020
Net sales	$	180,256	$	174,911	$	127,657		$	126,108
Gross profit	45,505		40,087		24,482			28,626
Net income (loss)	7,030		7,274		(12,734		)	(1,079		)
Basic earnings (loss) per share	0.16		0.16		(0.28		)	(0.02		)
Diluted earnings (loss) per share	0.16		0.16		(0.28		)	(0.02		)

	Fiscal Year 2019^(2)(3)(4)
	July 28, 2018		October 27, 2018		January 26, 2019			April 27, 2019
Net sales	$	154,188	$	172,692	$	115,069		$	127,755
Gross profit	38,247		42,757		24,869			24,421
Net income (loss)	4,574		8,606		(3,319		)	(10,819		)
Basic earnings (loss) per share	0.10		0.19		(0.07		)	(0.24		)
Diluted earnings (loss) per share	0.10		0.19		(0.07		)	(0.24		)

Nature of Business and Summary of Significant Accounting Policies Investment in affiliates (Details) - USD ($) $ in Thousands	12 Months Ended
	May 02, 2020	Apr. 27, 2019	Apr. 28, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Equity Method Investment, Ownership Percentage	12.18%
Other Commitment	$ 5,000
Equity Method Investments	17,257	$ 3,657
Equity in loss of affiliate	741	844	$ 481
Equity Method Investment, Summarized Financial Information, Current Assets	10,593	192
Equity Method Investment, Summarized Financial Information, Noncurrent Assets	4,266	2,626
Equity Method Investment, Summarized Financial Information, Current Liabilities	2,755	839
Equity Method Investment, Summarized Financial Information, Noncurrent Liabilities	4,086	2,599
Equity Method Investment, Summarized Financial Information, Net Income (Loss)	$ (1,383)	$ (2,168)	$ (1,493)

Nature of Business and Summary of Significant Accounting Policies Restricted Cash (Details) - USD ($) $ in Thousands	May 02, 2020	Apr. 27, 2019	Apr. 28, 2018	Apr. 29, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Cash and cash equivalents	$ 40,398	$ 35,383	$ 29,727
Restricted cash	14	359	28
Total cash, cash equivalents, and restricted cash shown in the consolidated statement of cash flows	$ 40,412	$ 35,742	$ 29,755	$ 32,839

Nature of Business and Summary of Significant Accounting Policies Revenue Recognition (Details) - USD ($) $ in Thousands	12 Months Ended
	May 02, 2020	Apr. 27, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Precontract costs	$ 1,582	$ 857
Minimum
Product Warranty Liability [Line Items]
Standard parts warranty period	1 year
Installation warranty period	1 year
Maximum
Product Warranty Liability [Line Items]
Standard parts warranty period	5 years
Installation warranty period	10 years

Nature of Business and Summary of Significant Accounting Policies Property and Equipment (Details)	12 Months Ended
	May 02, 2020
Buildings \| Minimum
Property, Plant and Equipment [Line Items]
Estimated useful life	5 years
Buildings \| Maximum
Property, Plant and Equipment [Line Items]
Estimated useful life	40 years
Machinery and equipment \| Minimum
Property, Plant and Equipment [Line Items]
Estimated useful life	5 years
Machinery and equipment \| Maximum
Property, Plant and Equipment [Line Items]
Estimated useful life	7 years
Office furniture and equipment \| Minimum
Property, Plant and Equipment [Line Items]
Estimated useful life	3 years
Office furniture and equipment \| Maximum
Property, Plant and Equipment [Line Items]
Estimated useful life	5 years
Computer software and hardware \| Minimum
Property, Plant and Equipment [Line Items]
Estimated useful life	3 years
Computer software and hardware \| Maximum
Property, Plant and Equipment [Line Items]
Estimated useful life	5 years
Equipment held for rental \| Minimum
Property, Plant and Equipment [Line Items]
Estimated useful life	2 years
Equipment held for rental \| Maximum
Property, Plant and Equipment [Line Items]
Estimated useful life	7 years
Demonstration equipment \| Minimum
Property, Plant and Equipment [Line Items]
Estimated useful life	3 years
Demonstration equipment \| Maximum
Property, Plant and Equipment [Line Items]
Estimated useful life	5 years
Transportation equipment \| Minimum
Property, Plant and Equipment [Line Items]
Estimated useful life	5 years
Transportation equipment \| Maximum
Property, Plant and Equipment [Line Items]
Estimated useful life	7 years

Nature of Business and Summary of Significant Accounting Policies Capitalized software costs (Details) - USD ($) $ in Thousands	May 02, 2020	Apr. 27, 2019
Capitalized software development costs for software sold to customers [Abstract]
Capitalized Software Development Costs for Software Sold to Customers	$ 1,357	$ 2,523

Nature of Business and Summary of Significant Accounting Policies Advertising Costs (Details) - USD ($) $ in Thousands	12 Months Ended
	May 02, 2020	Apr. 27, 2019	Apr. 28, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Advertising expense	$ 2,184	$ 2,969	$ 2,855

Nature of Business and Summary of Significant Accounting Policies Earnings (Loss) Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	May 02, 2020	Feb. 01, 2020	Nov. 02, 2019	Aug. 03, 2019	Apr. 27, 2019	Jan. 26, 2019	Oct. 27, 2018	Jul. 28, 2018	May 02, 2020	Apr. 27, 2019	Apr. 28, 2018
Net income (loss)
Basic earnings (loss) per share	$ (1,079)	$ (12,734)	$ 7,274	$ 7,030	$ (10,819)	$ (3,319)	$ 8,606	$ 4,574	$ 491	$ (958)	$ 5,562
Dilution associated with stock compensation plans									0	0	0
Diluted earnings (loss) per share									$ 491	$ (958)	$ 5,562
Shares
Basic earnings (loss) per share (in shares)									45,031	44,926	44,457
Dilution associated with stock compensation plans (in shares)									285	0	416
Diluted earnings (loss) per share (in shares)									45,316	44,926	44,873
Per share income (loss)
Basic earnings (loss) per share (in dollars per share)	$ (0.02)	$ (0.28)	$ 0.16	$ 0.16	$ (0.24)	$ (0.07)	$ 0.19	$ 0.10	$ 0.01	$ (0.02)	$ 0.13
Dilution associated with stock compensation plans (in dollars per share)									0.00	0.00	(0.01)
Diluted earnings (loss) per share (in dollars per share)	$ (0.02)	$ (0.28)	$ 0.16	$ 0.16	$ (0.24)	$ (0.07)	$ 0.19	$ 0.10	$ 0.01	$ (0.02)	$ 0.12
Stock Options
Antidilutive Securities Excluded from Computation of Earnings Per Share
Antidilutive securities excluded from computation of earnings per share (in shares)									2,198	2,304	1,548
Antidilutive securities excluded from computation of earnings per share, weighted average exercise price (in dollars per share)									$ 9.95	$ 9.99	$ 11.69

Nature of Business and Summary of Significant Accounting Policies Recent Accounting Pronouncements (Details) - USD ($) $ in Thousands	May 02, 2020	Apr. 28, 2019	Apr. 27, 2019
Accounting Changes and Error Corrections [Abstract]
Operating Lease, Right-of-Use Asset		$ 11,101
Operating lease liabilities	$ 2,416	2,745	$ 0
Operating Lease, Liability, Noncurrent		$ 8,356
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	us-gaap:AccruedLiabilitiesCurrent	us-gaap:AccruedLiabilitiesCurrent	us-gaap:AccruedLiabilitiesCurrent
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]		us-gaap:OtherLiabilitiesNoncurrent

Revenue Recognition Contract with Customer, Asset and Liability (Details) $ in Thousands	12 Months Ended
	May 02, 2020 USD ($) contract	Apr. 27, 2019 USD ($) contract
Revenue from Contract with Customer [Abstract]
Contract assets	$ 35,467	$ 33,704
Contract liabilities	50,897	47,178
Long-term contract liabilities	10,707	$ 10,053
Dollar Change [Abstract]
Contract assets	1,763
Contract liabilities - current	3,719
Contract liabilities - noncurrent	$ 654
Change in Contract with Customer, Asset and Liability, Percentage [Abstract]
Contract assets percent change	5.23%
Contract liabilities, current, percent change	7.88%
Contract liabilities, noncurrent, percent change	6.51%
Number of Loss on Contracts \| contract	1	6
Provision for Loss on Contracts	$ 42	$ 2,353
Revenue recognized related to contract liability	$ 45,195

Revenue Recognition Deferred Revenue, by Arrangement (Details) - USD ($) $ in Thousands	12 Months Ended
	May 02, 2020	Apr. 27, 2019
Revenue from Contract with Customer [Abstract]
Balance at beginning of year	$ 24,939	$ 20,127
New contracts sold	41,169	41,907
Less: reductions for revenue recognized	(41,167)	(37,241)
Foreign currency translation and other	(451)	146
Balance at end of year	$ 24,490	$ 24,939

Revenue Recognition Remaining Performance Obligations (Details) $ in Thousands	May 02, 2020 USD ($)
Revenue from Contract with Customer [Abstract]
Remaining performance obligation	$ 267,671
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligation, products	211,863
Remaining performance obligation, service agreements	55,808
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-04-25
Revenue from Contract with Customer [Abstract]
Remaining performance obligation	$ 222,963
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	12 months

Segment Reporting - Net Income by Segment (Details) $ in Thousands	3 Months Ended								12 Months Ended
	May 02, 2020 USD ($)	Feb. 01, 2020 USD ($)	Nov. 02, 2019 USD ($)	Aug. 03, 2019 USD ($)	Apr. 27, 2019 USD ($)	Jan. 26, 2019 USD ($)	Oct. 27, 2018 USD ($)	Jul. 28, 2018 USD ($)	May 02, 2020 USD ($) segment	Apr. 27, 2019 USD ($)	Apr. 28, 2018 USD ($)
Segment Reporting Information
Number of business units \| segment									5
Net sales	$ 126,108	$ 127,657	$ 174,911	$ 180,256	$ 127,755	$ 115,069	$ 172,692	$ 154,188	$ 608,932	$ 569,704	$ 610,530
Gross profit	28,626	24,482	40,087	45,505	24,421	24,869	42,757	38,247	138,700	130,294	145,669
Non-allocated operating expenses:
General and administrative									35,193	34,817	34,919
Product design and development									37,772	35,557	35,530
Operating income									(167)	(4,728)	12,460
Nonoperating income (expense):
Interest income									805	1,031	723
Interest expense									(106)	(160)	(217)
Other (expense) income, net									(541)	(1,087)	(537)
Income before income taxes									(9)	(4,944)	12,429
Income tax (benefit) expense									(500)	(3,986)	6,867
Net income (loss)	$ (1,079)	$ (12,734)	$ 7,274	$ 7,030	$ (10,819)	$ (3,319)	$ 8,606	$ 4,574	491	(958)	5,562
Depreciation, amortization, and impairment									17,718	18,635	17,784
Commerical
Segment Reporting Information
Net sales									152,627	148,833	134,535
Nonoperating income (expense):
Depreciation, amortization, and impairment									3,682	4,795	6,199
Live Events
Segment Reporting Information
Net sales									196,591	170,952	236,333
Nonoperating income (expense):
Depreciation, amortization, and impairment									5,605	5,194	4,783
High School Park and Recreation
Segment Reporting Information
Net sales									96,414	91,187	87,627
Nonoperating income (expense):
Depreciation, amortization, and impairment									2,025	1,965	1,646
Transportation
Segment Reporting Information
Net sales									70,139	64,391	59,578
Nonoperating income (expense):
Depreciation, amortization, and impairment									1,029	1,102	1,138
International
Segment Reporting Information
Net sales									93,161	94,341	92,457
Nonoperating income (expense):
Depreciation, amortization, and impairment									2,460	2,829	1,163
Unallocated corporate depreciation
Nonoperating income (expense):
Depreciation, amortization, and impairment									2,917	2,750	2,855
Operating Segments [Member]
Segment Reporting Information
Gross profit									138,700	130,294	145,669
Contribution Margin									72,798	65,646	82,909
Operating Segments [Member] \| Commerical
Segment Reporting Information
Gross profit									29,246	31,785	26,665
Contribution Margin									9,897	13,218	7,986
Operating Segments [Member] \| Live Events
Segment Reporting Information
Gross profit									39,518	32,164	49,755
Contribution Margin									26,074	18,484	35,439
Operating Segments [Member] \| High School Park and Recreation
Segment Reporting Information
Gross profit									28,874	26,858	29,317
Contribution Margin									15,341	14,518	18,317
Operating Segments [Member] \| Transportation
Segment Reporting Information
Gross profit									23,910	22,525	21,247
Contribution Margin									19,566	18,260	17,048
Operating Segments [Member] \| International
Segment Reporting Information
Gross profit									17,152	16,962	18,685
Contribution Margin									$ 1,920	$ 1,166	$ 4,119

Segment Reporting - Net Sales and Long-lived Assets by Geographic Area (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	May 02, 2020	Feb. 01, 2020	Nov. 02, 2019	Aug. 03, 2019	Apr. 27, 2019	Jan. 26, 2019	Oct. 27, 2018	Jul. 28, 2018	May 02, 2020	Apr. 27, 2019	Apr. 28, 2018
Net sales:
Net sales	$ 126,108	$ 127,657	$ 174,911	$ 180,256	$ 127,755	$ 115,069	$ 172,692	$ 154,188	$ 608,932	$ 569,704	$ 610,530
Long-lived assets:
Long-lived assets	67,484				65,314				67,484	65,314	68,059
United States
Net sales:
Net sales									504,931	460,099	501,646
Long-lived assets:
Long-lived assets	58,422				59,192				58,422	59,192	61,206
Outside United States
Net sales:
Net sales									104,001	109,605	108,884
Long-lived assets:
Long-lived assets	$ 9,062				$ 6,122				$ 9,062	$ 6,122	$ 6,853

Marketable Securities - Available-for-sale Securities (Details) - USD ($) $ in Thousands	May 02, 2020	Apr. 27, 2019
Schedule of Available-for-sale Securities
Amortized Cost	$ 1,230	$ 26,379
Unrealized Losses	0	(35)
Fair Value	1,230	26,344
Certificates of deposit
Schedule of Available-for-sale Securities
Amortized Cost	1,230	3,464
Unrealized Losses	0	0
Fair Value	$ 1,230	3,464
U.S. Government securities
Schedule of Available-for-sale Securities
Amortized Cost		10,779
Unrealized Losses		(5)
Fair Value		10,774
U.S. Government sponsored entities
Schedule of Available-for-sale Securities
Amortized Cost		10,510
Unrealized Losses		(28)
Fair Value		10,482
Municipal bonds
Schedule of Available-for-sale Securities
Amortized Cost		1,626
Unrealized Losses		(2)
Fair Value		$ 1,624

Marketable Securities - Available-for-sale by Maturity Date (Details) $ in Thousands	May 02, 2020 USD ($)
Schedule of Available-for-sale Securities
Less than 12 months	$ 1,230
Total	1,230
Certificates of deposit
Schedule of Available-for-sale Securities
Less than 12 months	1,230
Total	$ 1,230

Sale of Non-Digital Division Assets (Details) - Non-Digital Division [Member] $ in Thousands	12 Months Ended
	Apr. 28, 2018 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Assets sold	$ 517
Gain from sale of non-digital division	$ 1,267

Goodwill and Intangible Assets - Goodwill (Details) $ in Thousands	12 Months Ended
	May 02, 2020 USD ($)
Goodwill
Balance as of April 27, 2019:	$ 7,889
Foreign currency translation	(146)
Balance as of May 2, 2020:	7,743
Live Events
Goodwill
Balance as of April 27, 2019:	2,276
Foreign currency translation	(10)
Balance as of May 2, 2020:	2,266
Commerical
Goodwill
Balance as of April 27, 2019:	3,218
Foreign currency translation	(74)
Balance as of May 2, 2020:	3,144
Transportation
Goodwill
Balance as of April 27, 2019:	49
Foreign currency translation	(11)
Balance as of May 2, 2020:	38
International
Goodwill
Balance as of April 27, 2019:	2,346
Foreign currency translation	(51)
Balance as of May 2, 2020:	$ 2,295

Goodwill and Intangible Assets - Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	May 02, 2020	Apr. 27, 2019
Schedule of Definite-Lived Intangible and Indefinite-Lived Intangible Assets [Line Items]
Weighted Average Life (in years)	6 years	6 years
Gross Carrying Amount	$ 9,671	$ 9,852
Accumulated Amortization	6,317	4,946
Definite-lived, Net Value	3,354	4,906
Intangibles, net	$ 3,354	$ 4,906
Trademarks
Schedule of Definite-Lived Intangible and Indefinite-Lived Intangible Assets [Line Items]
Weighted Average Life (in years)	19 years 5 months	19 years 6 months
Gross Carrying Amount	$ 663	$ 679
Accumulated Amortization	183	148
Definite-lived, Net Value	$ 480	$ 531
Software
Schedule of Definite-Lived Intangible and Indefinite-Lived Intangible Assets [Line Items]
Weighted Average Life (in years)	3 years	3 years
Gross Carrying Amount	$ 6,247	$ 6,330
Accumulated Amortization	4,890	3,807
Definite-lived, Net Value	$ 1,357	$ 2,523
Customer Relationships
Schedule of Definite-Lived Intangible and Indefinite-Lived Intangible Assets [Line Items]
Weighted Average Life (in years)	10 years	10 years
Gross Carrying Amount	$ 2,641	$ 2,720
Accumulated Amortization	1,135	888
Definite-lived, Net Value	$ 1,506	$ 1,832
Other
Schedule of Definite-Lived Intangible and Indefinite-Lived Intangible Assets [Line Items]
Weighted Average Life (in years)	1 year 6 months	1 year 5 months
Gross Carrying Amount	$ 120	$ 123
Accumulated Amortization	109	103
Definite-lived, Net Value	$ 11	$ 20

Goodwill and Intangible Assets Schedule of Finite-Lived Intangible Assets, Future Amortization Expense (Details) - USD ($) $ in Thousands	May 02, 2020	Apr. 27, 2019
Finite-Lived Intangible Assets, Amortization Expense, Maturity Schedule [Abstract]
2021	$ 1,483
2022	476
2023	280
2024	280
2025	280
Thereafter	555
Finite-Lived Intangible Assets, Net	$ 3,354	$ 4,906

Goodwill and Intangible Assets -Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	May 02, 2020	Apr. 27, 2019	Apr. 28, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization of Intangible Assets	$ 1,498	$ 2,157	$ 1,330

Selected Financial Statement Data - Inventory (Details) - USD ($) $ in Thousands	May 02, 2020	Apr. 27, 2019
Selected Financial Statement Data [Abstract]
Raw materials	$ 35,306	$ 30,789
Work-in-process	12,102	8,239
Finished goods	39,395	39,804
Inventories	$ 86,803	$ 78,832

Selected Financial Statement Data - Property and Equipment (Details) - USD ($) $ in Thousands	May 02, 2020	Apr. 27, 2019
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 251,440	$ 241,706
Less accumulated depreciation	183,956	176,392
Property and equipment, net	67,484	65,314
Land
Property, Plant and Equipment [Line Items]
Property and equipment, gross	2,183	1,738
Buildings
Property, Plant and Equipment [Line Items]
Property and equipment, gross	68,804	66,403
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	104,157	96,486
Office furniture and equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	6,151	6,195
Computer software and hardware
Property, Plant and Equipment [Line Items]
Property and equipment, gross	53,441	55,460
Equipment held for rental
Property, Plant and Equipment [Line Items]
Property and equipment, gross	287	287
Demonstration equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	8,473	7,422
Transportation equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 7,944	$ 7,715

Selected Financial Statement Data - Accrued Expenses (Details) - USD ($) $ in Thousands	May 02, 2020	Apr. 28, 2019	Apr. 27, 2019
Selected Financial Statement Data [Abstract]
Compensation	$ 15,967		$ 12,766
Taxes, other than income taxes	3,597		2,685
Accrued employee benefits	2,243		3,046
Operating lease liabilities	2,416	$ 2,745	0
Short-term accrued expenses	9,270		8,520
Claims liabilities	2,562		2,685
Acquisition-related contingency consideration	571		2,359
Accrued expenses	$ 36,626		$ 32,061
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	us-gaap:AccruedLiabilitiesCurrent	us-gaap:AccruedLiabilitiesCurrent	us-gaap:AccruedLiabilitiesCurrent

Selected Financial Statement Data - Other (Expense) Income (Details) - USD ($) $ in Thousands	12 Months Ended
	May 02, 2020	Apr. 27, 2019	Apr. 28, 2018
Selected Financial Statement Data [Abstract]
Foreign currency transaction gains (losses)	$ 207	$ (262)	$ 29
Equity in losses of affiliates	(741)	(844)	(481)
Other Nonoperating Expense	(7)		(85)
Other Nonoperating Income		19
Other (expense) income, net	$ (541)	$ (1,087)	$ (537)

Selected Financial Statement Data - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	May 02, 2020	Apr. 27, 2019	Apr. 28, 2018
Property, Plant and Equipment [Abstract]
Depreciation	$ 16,230	$ 16,564	$ 16,273

Receivables - (Details) - USD ($) $ in Thousands	12 Months Ended
Receivables - (Details) - USD ($) $ in Thousands	May 02, 2020	Apr. 27, 2019
Receivables
Allowance for doubtful accounts	$ 2,828	$ 2,208
Retainage on construction-type contracts, expected to be collected in one year	687	440
Financing Receivable
Receivables
Long-term contracts, present value	4,633	3,514
Long-term contracts, face amount	$ 5,166	$ 3,271
Financing Receivable \| Minimum
Receivables
Contract receivables annual interest rates	5.00%
Financing Receivable \| Maximum
Receivables
Contract receivables annual interest rates	9.00%

Financing Agreements - (Details) $ in Thousands	12 Months Ended
Financing Agreements - (Details) $ in Thousands	May 02, 2020 USD ($)
Line of Credit Facility [Line Items]
Notes Payable	$ 15,000
Line of Credit
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 35,000
Effective interest rate	2.00%
Line of credit facility, unused capacity, commitment fee percentage	0.125%
Debt instrument, restrictive covenants, fixed charge coverage ratio	200.00%
Debt instrument, restrictive covenants, capital expenditure reserve, amount	$ 6,000
Debt instrument, restrictive covenants, interest-bearing debt, ratio	200.00%
Standby Letters of Credit
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 15,000
Line of Credit Facility, Amount Outstanding	4,196
Bank guarantee
Line of Credit Facility [Line Items]
Line of Credit Facility, Amount Outstanding	$ 8,894
LIBOR \| Minimum \| Line of Credit
Line of Credit Facility [Line Items]
Debt instrument, basis spread on variable rate	145.00%
LIBOR \| Maximum \| Line of Credit
Line of Credit Facility [Line Items]
Debt instrument, basis spread on variable rate	195.00%

Share Repurchase Program (Details) - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	May 02, 2020	Jun. 17, 2016
Equity, Class of Treasury Stock [Line Items]
Stock Repurchase Program, Authorized Amount		$ 40,000
Stock Repurchased During Period, Shares	1,039
Stock Repurchased During Period, Value	$ (5,636)
Stock Repurchase Program, Remaining Authorized Repurchase Amount	$ 32,539

Leases (Details) $ in Thousands	12 Months Ended
Leases (Details) $ in Thousands	May 02, 2020 USD ($)
Lessee, Lease, Description [Line Items]
Weighted average remaining lease term (years)	5 years
Weighted average discount rate (percent)	3.40%
Operating lease payments	$ 3,340
Minimum
Lessee, Lease, Description [Line Items]
Term of lease (years)	1 year
Maximum
Lessee, Lease, Description [Line Items]
Term of lease (years)	5 years
Cost of sales
Lessee, Lease, Description [Line Items]
Operating lease cost	$ 2,325
Operating Expense [Member]
Lessee, Lease, Description [Line Items]
Operating lease cost	$ 1,116

Leases - Lease Liability Maturity Schedule (Details) $ in Thousands	May 02, 2020 USD ($)
Leases [Abstract]
2021	$ 2,675
2022	1,984
2023	1,209
2024	1,085
2025	931
Thereafter	1,467
Total lease payments	9,351
Less imputed interest	(780)
Total lease liabilities	8,571
Lessee, Operating Lease, Option to Extend	$ 3,879

Shareholders' Equity and Share-Based Compensation - Narrative (Details) $ / shares in Units, $ in Thousands	12 Months Ended
	May 02, 2020 USD ($) $ / shares shares	Apr. 27, 2019 USD ($) shares	Apr. 28, 2018 USD ($) shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized	120,000,000
Common purchase right per common stock	1
Share price \| $ / shares	$ 25
Days following ownership announcement option one	10 days
Percentage of ownership	20.00%
Days following ownership announcement, option two	10 days
Shares available for grant	1,176,000
Weighted-average period for unrecognized costs	2 years 10 months 8 days
Exercisable at end of year, Shares	1,593,000
Exercised, aggregate intrinsic value \| $	$ 0	$ 98	$ 65
Fair value of vested options \| $	$ 566	$ 667	$ 977
Stock issued for ESPP	453,000	241,000	223,000
Nonvested unrecognized compensation expense \| $	$ 3,096
Proceeds from exercise of stock options \| $	0	$ 1,318	$ 519
Tax benefit from share based payments \| $	$ (92)	(52)	9
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award life	10 years
Vesting period	5 years
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	5 years
Weighted-average period for unrecognized costs	2 years 8 months 22 days
Fair value \| $	$ 1,415	$ 1,530	$ 1,274
Restricted Stock and Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation costs \| $	$ 2,197
In The Money Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price (usd per share) \| $ / shares	$ 4.45
Exercisable at end of year, Shares	0
Employee Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	1 year
Shares available for grant	4,000,000
Requisite service period	6 months
Employee maximum contribution percentage	15.00%
Percentage of purchase price at the lower of the fair market value	85.00%
Purchase discount percentage	15.00%
Shares reserved for future issuance	979,000
Independent Directors \| Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award life	7 years
Vesting period	1 year
Independent Directors \| Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	1 year
Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized	115,000,000
Undesignated Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized	5,000,000
Series A Junior Participating Preferred Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common purchase right per common stock	0.001

Shareholders' Equity and Share-Based Compensation - Nonvested Restricted Stock and RSU Activity (Details) - Restricted Stock and Restricted Stock Units - $ / shares shares in Thousands	12 Months Ended
	May 02, 2020	Apr. 27, 2019	Apr. 28, 2018
Number of Nonvested Shares
Outstanding at beginning of year, Nonvested Shares	444	437	402
Granted, Nonvested Shares	186	181	178
Vested, Nonvested Shares	(173)	(169)	(141)
Forfeited, Nonvested Shares	(8)	(5)	(2)
Outstanding at end of year, Nonvested Shares	449	444	437
Weighted Average Grant Date Fair Value Per Share
Outstanding at beginning of year, Weighted Average Grant Date Fair Value (usd per share)	$ 7.58	$ 8.48	$ 8.69
Granted, Weighted Average Grant Date Fair Value (usd per share)	7.03	6.79	8.46
Vested, Weighted Average Grant Date Fair Value (usd per share)	8.10	9.05	9.06
Forfeited, Weighted Average Grant Date Fair Value (usd per share)	7.37	7.74	8.93
Outstanding at end of year, Weighted Average Grant Date Fair Value (usd per share)	$ 7.16	$ 7.58	$ 8.48

Shareholders' Equity and Share-Based Compensation - Stock Option Activity (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	May 02, 2020	Apr. 27, 2019	Apr. 28, 2018
Stock Options
Outstanding at beginning of year, Shares	2,202
Granted, Shares	182
Canceled or forfeited, Shares	(263)
Exercised, Shares	0
Outstanding at end of year, Shares	2,121	2,202
Shares vested and expected to vest	2,098
Exercisable at end of year, Shares	1,593
Weighted Average Exercise Price Per Share
Outstanding at beginning of year, (usd per share)	$ 10.03
Granted, (usd per share)	7.47
Canceled or forfeited, (usd per share)	8.85
Exercised, (usd per share)	0.00
Outstanding at end of year, (usd per share)	9.96	$ 10.03
Shares vested and expected to vest (usd per share)	9.98
Exercisable at end of year (usd per share)	$ 10.50
Outstanding, beginning of period, weighted average remaining contractual life	4 years 4 months 18 days	4 years 4 months 28 days
Outstanding, end of period, weighted average remaining contractual life	4 years 4 months 18 days	4 years 4 months 28 days
Vested and expected to vest, weighted average remaining contractual life	4 years 4 months 4 days
Exercisable at end of period, weighted average remaining contractual life	3 years 2 months
Outstanding, beginning of period, aggregate intrinsic value	$ 0
Exercised, aggregate intrinsic value	0	$ 98	$ 65
Outstanding, end of period, aggregate intrinsic value	0	$ 0
Shares vested and expected to vest, aggregate intrinsic value	0
Exercisable at end of period, aggregate intrinsic value	$ 0

Shareholders' Equity and Share-Based Compensation - Assumptions used in Black-Scholes Model (Details) - $ / shares	12 Months Ended
	May 02, 2020	Apr. 27, 2019	Apr. 28, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value of options granted	$ 1.99	$ 2.16	$ 2.82
Risk-free interest rate	1.51%	2.83%
Expected dividend rate	3.50%	3.37%	3.27%
Expected volatility	37.55%	38.58%
Expected life of option	6 years 11 months 7 days	6 years 10 months
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate			1.95%
Expected volatility			42.51%
Expected life of option			6 years 10 months

Shareholders' Equity and Share-Based Compensation - Share-Based Compensation Expense by Award Type (Details) - USD ($) $ in Thousands	12 Months Ended
	May 02, 2020	Apr. 27, 2019	Apr. 28, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation	$ 2,265	$ 2,479	$ 2,635
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation	492	593	763
Restricted Stock and Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation	1,341	1,446	1,442
Employee Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation	$ 432	$ 440	$ 430

Shareholders' Equity and Share-Based Compensation - Share-Based Compensation Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	May 02, 2020	Apr. 27, 2019	Apr. 28, 2018
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expense	$ 2,265	$ 2,479	$ 2,635
Cost of sales
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expense	514	578	619
Selling
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expense	572	625	644
General and administrative
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expense	717	772	851
Product design and development
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expense	$ 462	$ 504	$ 521

Retirement Benefits - (Details) - USD ($) $ in Thousands	12 Months Ended
Retirement Benefits - (Details) - USD ($) $ in Thousands	May 02, 2020	Apr. 27, 2019	Apr. 28, 2018
Retirement Benefits [Abstract]
Percentage of matching contribution	50.00%
Maximum annual contribution percentage	6.00%
Award requisite service period	3 months
Minimum age attained for award	21 years
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Contributions	$ 2,917	$ 2,754	$ 2,612

Income Taxes - Narrative (Details) - USD ($) $ in Thousands	8 Months Ended	9 Months Ended	12 Months Ended
Income Taxes - Narrative (Details) - USD ($) $ in Thousands	Dec. 22, 2017	Jan. 26, 2019	May 02, 2020	Apr. 27, 2019	Apr. 28, 2018	Apr. 29, 2017
Operating Loss Carryforwards [Line Items]
Deferred tax assets, gross			$ 19,094	$ 15,808
Deferred tax asset valuation allowance			1,189	893
Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations		$ 2,775	159	2,741
Deferred Other Tax Expense (Benefit)		$ 480
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%				30.40%	35.00%
Accrued interest or penalties			30	$ 26
International
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards			4,832
Deferred tax assets, gross			919
Ireland and Belgium [Domain]
Operating Loss Carryforwards [Line Items]
Deferred tax asset valuation allowance			$ 627

Income Taxes - Pretax Income Domestic and Foreign (Details) - USD ($) $ in Thousands	12 Months Ended
	May 02, 2020	Apr. 27, 2019	Apr. 28, 2018
Income Tax Disclosure [Abstract]
Domestic	$ (4,187)	$ (8,402)	$ 9,235
Foreign	4,178	3,458	3,194
Income before income taxes	$ (9)	$ (4,944)	$ 12,429

Income Taxes - Components of Income Tax Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	May 02, 2020	Apr. 27, 2019	Apr. 28, 2018
Current:
Federal	$ 625	$ (2,142)	$ 1,646
State	297	384	868
Foreign	761	1,151	1,205
Deferred:
Federal	(2,028)	(2,725)	3,693
State	(321)	(390)	27
Foreign	166	(264)	(572)
Income tax (benefit) expense	$ (500)	$ (3,986)	$ 6,867

Income Taxes - Effective Income Tax (Details) - USD ($) $ in Thousands	12 Months Ended
	May 02, 2020	Apr. 27, 2019	Apr. 28, 2018
Income Tax Disclosure [Abstract]
Computed income tax (benefit) expense at federal statutory rates	$ (2)	$ (1,038)	$ 3,779
Change in uncertain tax positions	4	(2,600)	65
Research and development tax credit	(1,621)	(1,278)	(1,598)
Other, net	(241)	587	559
Change in valuation allowances	482	(471)	(486)
GILTI	149	391	0
Base Erosion Anti-Abuse Tax (BEAT)	301	0	0
Stock compensation	318	308	336
Meals and entertainment	305	248	333
Dividends paid to retirement plan	(111)	(158)	(238)
State taxes, net of federal benefit	(84)	25	592
Impact of Tax Act	0	0	3,819
Domestic production activities deduction	0	0	(294)
Income tax (benefit) expense	$ (500)	$ (3,986)	$ 6,867

Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	May 02, 2020	Apr. 27, 2019
Deferred taxes assets:
Accrued warranty obligations	$ 6,202	$ 5,912
Vacation accrual	1,753	1,571
Deferred maintenance revenue	987	716
Allowance for excess and obsolete inventory	1,318	1,340
Legal reserve	503	260
Equity compensation	396	486
Allowance for doubtful accounts	546	402
Inventory capitalization	822	567
Accrued compensation and benefits	539	549
Net operating loss carry forwards	919	1,059
Research and development tax credit carry forwards	1,975	1,299
Lease accounting - lease liability	2,099	0
Other	1,035	1,647
Deferred tax assets, gross	19,094	15,808
Valuation allowance	(1,189)	(893)
Deferred tax assets net of valuation	17,905	14,915
Deferred tax liabilities:
Property and equipment	(2,141)	(3,100)
Lease accounting - right of use asset	(2,103)	0
Prepaid expenses	(440)	(476)
Intangible assets	(317)	(623)
Unrealized gain on foreign currency exchange	17	6
Other	(68)	(75)
Deferred tax liabilities, gross	(5,086)	(4,280)
Deferred tax assets, net	$ 12,819	$ 10,635

Income Taxes - Deferred Tax Assets and Liabilities Current and Non Current (Details) - USD ($) $ in Thousands	May 02, 2020	Apr. 27, 2019
Income Tax Disclosure [Abstract]
Deferred income taxes	$ 13,271	$ 11,168
Deferred Income Tax Liabilities, Net	(452)	(533)
Deferred tax assets, net	$ 12,819	$ 10,635

Income Taxes - Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Jan. 26, 2019	May 02, 2020	Apr. 27, 2019
Income Tax Disclosure [Abstract]
Unrecognized Tax Benefits that Would Impact Effective Tax Rate		$ 138
Reconciliation of Changes in Unrecognized Tax Benefits
Unrecognized tax benefits, beginning balance	$ 3,178	578	$ 3,178
Gross increases related to prior period tax positions		17	13
Gross decreases related to prior period tax positions		2	18
Gross increases related to current period tax positions		148	146
Lapse of statute of limitations	$ (2,775)	(159)	(2,741)
Unrecognized tax benefits, ending balance		$ 582	$ 578

Cash Flow Information - Change in Operating Assets and Liabilities (Details) - USD ($) $ in Thousands	12 Months Ended
	May 02, 2020	Apr. 27, 2019	Apr. 28, 2018
(Increase) decrease:
Account receivable	$ (7,461)	$ 10,856	$ 2,266
Long-term receivables	(1,173)	329	1,548
Inventories	(8,347)	(4,076)	(8,517)
Contract assets	1,931	3,040	(5,911)
Prepaid expenses and other current assets	(1,403)	472	(1,252)
Income taxes receivables	533	4,250	(4,747)
Investment in affiliates and other assets	3,137	(48)	(413)
Increase (decrease):
Accounts payable	2,377	(2,747)	(2,573)
Contract liabilities	4,548	10,774	3,480
Accrued expenses	6,745	4,631	3,472
Warranty obligations	273	(4,393)	346
Long-term warranty obligations	883	(1,079)	1,729
Income taxes payable	390	(3,023)	(592)
Long-term marketing obligations and other payables	(387)	(1,116)	379
Change in operating assets and liabilities	$ (8,090)	$ 11,886	$ 1,863

Cash Flow Information - Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	12 Months Ended
	May 02, 2020	Apr. 27, 2019	Apr. 28, 2018
Cash payments for:
Interest	$ 46	$ 177	$ 193
Income taxes, net of refunds	$ 977	$ (1,934)	$ 8,937

Cash Flow Information - Non-Cash Investing and Financing Activities (Details) - USD ($) $ in Thousands	12 Months Ended
	May 02, 2020	Apr. 27, 2019	Apr. 28, 2018
Supplemental Cash Flow Elements [Abstract]
Demonstration equipment transferred to inventory	$ 10	$ 97	$ 72
Purchases of property and equipment included in accounts payable	1,951	1,106	1,983
Contributions of common stock under the ESPP	$ 2,311	$ 1,650	$ 1,682

Fair Value Measurement - (Details) - USD ($) $ in Thousands	May 02, 2020	Apr. 27, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available-for-sale securities:	$ 1,230	$ 26,344
Certificates of deposit
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available-for-sale securities:	1,230	3,464
U.S. Government securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available-for-sale securities:		10,774
U.S. Government sponsored entities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available-for-sale securities:		10,482
Municipal bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available-for-sale securities:		1,624
Recurring Basis
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Cash and cash equivalents	40,398	35,383
Restricted cash	14	359
Derivatives - asset position	261
Derivatives - liability position	(17)	(4)
Assets (Liability), net	41,125	59,108
Recurring Basis \| Certificates of deposit
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available-for-sale securities:	1,230	3,464
Recurring Basis \| U.S. Government securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available-for-sale securities:		10,774
Recurring Basis \| U.S. Government sponsored entities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available-for-sale securities:		10,482
Recurring Basis \| Municipal bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available-for-sale securities:		1,624
Recurring Basis \| Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Cash and cash equivalents	40,398	35,383
Restricted cash	14	359
Derivatives - asset position	0
Derivatives - liability position	0	0
Assets (Liability), net	40,412	46,516
Recurring Basis \| Level 1 \| Certificates of deposit
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available-for-sale securities:	0	0
Recurring Basis \| Level 1 \| U.S. Government securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available-for-sale securities:		10,774
Recurring Basis \| Level 1 \| U.S. Government sponsored entities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available-for-sale securities:		0
Recurring Basis \| Level 1 \| Municipal bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available-for-sale securities:		0
Recurring Basis \| Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Cash and cash equivalents	0	0
Restricted cash	0	0
Derivatives - asset position	261	91
Derivatives - liability position	(17)	(4)
Assets (Liability), net	1,474	15,657
Recurring Basis \| Level 2 \| Certificates of deposit
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available-for-sale securities:	1,230	3,464
Recurring Basis \| Level 2 \| U.S. Government securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available-for-sale securities:		0
Recurring Basis \| Level 2 \| U.S. Government sponsored entities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available-for-sale securities:		10,482
Recurring Basis \| Level 2 \| Municipal bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available-for-sale securities:		1,624
Reported Value Measurement [Member] \| Recurring Basis
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Derivatives - asset position		91
Acquisition-related contingent consideration	(761)	(3,065)
Estimate of Fair Value Measurement \| Recurring Basis \| Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Derivatives - asset position		0
Acquisition-related contingent consideration	0	0
Estimate of Fair Value Measurement \| Recurring Basis \| Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Acquisition-related contingent consideration	0	0
Estimate of Fair Value Measurement \| Recurring Basis \| Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Cash and cash equivalents	0	0
Restricted cash	0	0
Derivatives - asset position	0	0
Derivatives - liability position	0	0
Acquisition-related contingent consideration	(761)	(3,065)
Assets (Liability), net	(761)	(3,065)
Estimate of Fair Value Measurement \| Recurring Basis \| Level 3 \| Certificates of deposit
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available-for-sale securities:	$ 0	0
Estimate of Fair Value Measurement \| Recurring Basis \| Level 3 \| U.S. Government securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available-for-sale securities:		0
Estimate of Fair Value Measurement \| Recurring Basis \| Level 3 \| U.S. Government sponsored entities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available-for-sale securities:		0
Estimate of Fair Value Measurement \| Recurring Basis \| Level 3 \| Municipal bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available-for-sale securities:		$ 0

Fair Value Measurement Rollforward of Level 3 Contingent Consideration Liabilities (Details) - Recurring Basis - Level 3 - Estimate of Fair Value Measurement - Contingent Consideration Liability [Member] $ in Thousands	12 Months Ended
	May 02, 2020 USD ($)
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Acquisition-related contingent consideration as of April 27, 2019	$ 3,065
Additions	100
Settlements	(2,491)
Interest	50
Foreign currency translation	37
Acquisition-related contingent consideration as of May 2, 2020	$ 761

Derivative Financial Instruments - (Details) € in Thousands, £ in Thousands, SFr in Thousands, RM in Thousands, $ in Thousands, $ in Thousands, $ in Thousands	May 02, 2020 USD ($)	May 02, 2020 CAD ($)	May 02, 2020 AUD ($)	May 02, 2020 GBP (£)	May 02, 2020 EUR (€)	May 02, 2020 CHF (SFr)	May 02, 2020 MYR (RM)	Apr. 27, 2019 USD ($)	Apr. 27, 2019 CAD ($)	Apr. 27, 2019 AUD ($)	Apr. 27, 2019 GBP (£)	Apr. 27, 2019 EUR (€)	Apr. 27, 2019 CHF (SFr)	Apr. 27, 2019 MYR (RM)
Recurring Basis
Derivative
Foreign currency contract, asset	$ 261
Foreign currency contract, liability	(17)							$ (4)
Recurring Basis \| Level 2
Derivative
Foreign currency contract, asset	261							91
Foreign currency contract, liability	(17)							(4)
U.S. Dollars/Australian Dollars \| Not Designated as Hedging Instrument [Member]
Derivative
Derivative, Notional Amount	2,235		$ 3,323					2,688		$ 3,772
U.S. Dollars/Canadian Dollars \| Not Designated as Hedging Instrument [Member]
Derivative
Derivative, Notional Amount	452	$ 648						625	$ 821
U.S. Dollars/British Pounds \| Not Designated as Hedging Instrument [Member]
Derivative
Derivative, Notional Amount	3,160			£ 2,424				3,547			£ 2,680
U.S. Dollars/Euros \| Not Designated as Hedging Instrument [Member]
Derivative
Derivative, Notional Amount	1,881				€ 1,689			0				€ 0
U.S. Dollars/Swiss Franc \| Not Designated as Hedging Instrument [Member]
Derivative
Derivative, Notional Amount	0					SFr 0		927					SFr 925
U.S. Dollars/Malaysian Ringgit \| Not Designated as Hedging Instrument [Member]
Derivative
Derivative, Notional Amount	$ 0						RM 0	$ 60						RM 246

Commitments and Contingencies - Litigation (Details) - USD ($) $ in Thousands	May 02, 2020	Apr. 27, 2019
Loss Contingencies [Line Items]
Loss Contingency, Estimate of Possible Loss	$ 2,072	$ 1,072

Commitments and Contingencies - Guarantees and Warranties (Details) - USD ($) $ in Thousands	12 Months Ended
	May 02, 2020	Apr. 27, 2019	Apr. 28, 2018
Movement in Standard Product Warranty Accrual
Beginning accrued warranty obligations	$ 24,470	$ 29,953
Warranties issued during the period	10,629	9,239
Settlements made during the period	(9,209)	(16,715)
Changes in accrued warranty obligations for pre-existing warranties during the period, including expirations	(266)	1,993
Ending accrued warranty obligations	25,624	24,470	$ 29,953
Performance guarantees \| Letter of credit and bank guarantees agreements
Guarantees:
Performance guarantees outstanding	13,090
Performance guarantees \| Surety bonds
Guarantees:
Performance guarantees outstanding	18,212
Out-of-Home Product Application [Member]
Movement in Standard Product Warranty Accrual
Changes in accrued warranty obligations for pre-existing warranties during the period, including expirations	$ 0	$ 2,427	$ 4,539

Commitments and Contingencies - Purchase Commitments (Details) $ in Thousands	May 02, 2020 USD ($)
Purchase Obligation, Fiscal Year Maturity
2021	$ 4,775
2022	2,750
2023	1,754
2024	148
2025	113
Thereafter	40
Total	9,580
Other Commitment	$ 5,000

Subsequent Events - (Details) $ in Thousands	12 Months Ended
Subsequent Events - (Details) $ in Thousands	May 02, 2020 USD ($)
Subsequent Event [Line Items]
Number of employees, voluntary retirement	57
Voluntary retirement cost	$ 892
Number of employees, reduction in force	98
Severance Costs	$ 1,365

Quarterly Financial Data (Unaudited) - (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								9 Months Ended	12 Months Ended
	May 02, 2020	Feb. 01, 2020	Nov. 02, 2019	Aug. 03, 2019	Apr. 27, 2019	Jan. 26, 2019	Oct. 27, 2018	Jul. 28, 2018	Jan. 26, 2019	May 02, 2020	Apr. 27, 2019	Apr. 28, 2018
Quarterly Financial Information Disclosure [Abstract]
Net sales	$ 126,108	$ 127,657	$ 174,911	$ 180,256	$ 127,755	$ 115,069	$ 172,692	$ 154,188		$ 608,932	$ 569,704	$ 610,530
Gross profit	28,626	24,482	40,087	45,505	24,421	24,869	42,757	38,247		138,700	130,294	145,669
Net income (loss)	$ (1,079)	$ (12,734)	$ 7,274	$ 7,030	$ (10,819)	$ (3,319)	$ 8,606	$ 4,574		$ 491	$ (958)	$ 5,562
Basic earnings (loss) per share (in dollars per share)	$ (0.02)	$ (0.28)	$ 0.16	$ 0.16	$ (0.24)	$ (0.07)	$ 0.19	$ 0.10		$ 0.01	$ (0.02)	$ 0.13
Diluted earnings (loss) per share (in dollars per share)	$ (0.02)	$ (0.28)	$ 0.16	$ 0.16	$ (0.24)	$ (0.07)	$ 0.19	$ 0.10		$ 0.01	$ (0.02)	$ 0.12
Tariff expense										$ 4,927	$ 6,300
Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations									$ 2,775	$ 159	$ 2,741
Deferred Other Tax Expense (Benefit)									$ 480

- Definition

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

+ References

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+ Details

- Definition

The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

+ References

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+ Details

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References + Details

SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS - (Details) - Allowance for Doubtful Accounts - USD ($) $ in Thousands	12 Months Ended
	May 02, 2020	Apr. 27, 2019	Apr. 28, 2018
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Year	$ 2,208	$ 2,151	$ 2,610
Charged to Costs and Expenses	1,461	1,620	1,451
Charged to Other Accounts	0	0	0
Deductions	(841)	(1,563)	(1,910)
Balance at End of Year	$ 2,828	$ 2,208	$ 2,151

Revenue Recognition Disaggregation of Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	May 02, 2020	Apr. 27, 2019
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 608,932	$ 569,704
Goods/services transferred at a point in time
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	285,701	276,951
Goods/services transferred over time
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	323,231	292,753
Commerical
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	152,627	148,833
Commerical \| Goods/services transferred at a point in time
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	105,096	111,617
Commerical \| Goods/services transferred over time
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	47,531	37,216
Live Events
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	196,591	170,952
Live Events \| Goods/services transferred at a point in time
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	39,521	35,313
Live Events \| Goods/services transferred over time
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	157,070	135,639
High School Park and Recreation
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	96,414	91,187
High School Park and Recreation \| Goods/services transferred at a point in time
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	68,582	60,763
High School Park and Recreation \| Goods/services transferred over time
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	27,832	30,424
Transportation
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	70,139	64,391
Transportation \| Goods/services transferred at a point in time
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	25,157	24,500
Transportation \| Goods/services transferred over time
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	44,982	39,891
International
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	93,161	94,341
International \| Goods/services transferred at a point in time
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	47,345	44,758
International \| Goods/services transferred over time
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	45,816	49,583
Unique configuration
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	278,405	250,011
Unique configuration \| Commerical
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	35,212	25,171
Unique configuration \| Live Events
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	140,044	119,569
Unique configuration \| High School Park and Recreation
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	19,176	21,792
Unique configuration \| Transportation
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	43,519	38,490
Unique configuration \| International
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	40,454	44,989
Limited configuration
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	279,224	271,786
Limited configuration \| Commerical
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	102,847	108,921
Limited configuration \| Live Events
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	31,897	30,107
Limited configuration \| High School Park and Recreation
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	74,266	66,825
Limited configuration \| Transportation
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	24,588	23,799
Limited configuration \| International
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	45,626	42,134
Service and other
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	51,303	47,907
Service and other \| Commerical
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	14,568	14,741
Service and other \| Live Events
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	24,650	21,276
Service and other \| High School Park and Recreation
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	2,972	2,570
Service and other \| Transportation
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	2,032	2,102
Service and other \| International
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 7,081	$ 7,218