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[Member] Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] Depreciation and amortization: Depreciation, Depletion and Amortization Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Timing of Transfer of Good or Service [Axis] Timing of Transfer of Good or Service [Axis] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Temporary Equity [Roll Forward] Gross profit Gross profit: Gross Profit Restrictions on Cash and Cash Equivalents Restrictions on Cash and Cash Equivalents [Table Text Block] Schedule of Product Warranty Liability Schedule of Product Warranty Liability [Table Text Block] Fair Value as of Grant Date Award Grant Date Fair Value Fair value, net asset (liability), total Fair Value, Net Asset (Liability) Subsequent Events [Abstract] Debt instrument, measurement input Debt Instrument, Measurement Input Level 2 Fair Value, Inputs, Level 2 [Member] Debt issuance costs, net Debt Issuance Costs, Net Financing Agreements Debt Disclosure [Text Block] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Geographical [Domain] Geographical [Domain] Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Debt instrument, face amount Debt Instrument, Face Amount Disaggregation of Revenue Disaggregation of Revenue [Table Text Block] Diluted net income Net Income (Loss) Attributable to Parent, Diluted Beginning accrued warranty obligations Ending accrued warranty obligations Standard and Extended Product Warranty Accrual Entity Address, Postal Zip Code Entity Address, Postal Zip Code Convertible debt Convertible Debt Restatement Determination Date: Restatement Determination Date [Axis] Title of 12(b) Security Title of 12(b) Security Common Stock, no par value, authorized 115,000 shares; 49,006 and 48,121 shares issued as of January 25, 2025 and April 27, 2024, respectively Common Stock, Value, Issued Contract assets Contract Assets, Percent Change The percent change of contract assets. Cash and cash equivalents Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Schedule of Investments [Table] Schedule of Investments [Table] Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested [Member] Additional cash balances denominated in foreign currencies, maintained by foreign subsidiaries Cash, Additional Amount Held In Foreign Currencies, Maintained By Foreign Subsidiaries Cash, Additional Amount Held In Foreign Currencies, Maintained By Foreign Subsidiaries Shares owner by noncontrolling owner (in shares) Subsidiary, Shares Owned, Noncontrolling Owner Subsidiary, Shares Owned, Noncontrolling Owner CASH FLOWS FROM FINANCING ACTIVITIES: Net Cash Provided by (Used in) Financing Activities [Abstract] Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member] Convertible Note Offering Convertible Note Offering [Member] Convertible Note Offering Preferred Shares, no par value, authorized 50 shares; no shares issued and outstanding Preferred Stock, Value, Issued Impairment, contract assets Impairment, Contract Assets Impairment, Contract Assets Share-Based Payment Arrangement Share-Based Payment Arrangement [Member] Basic (in usd per share) Basic earnings (loss) per share (in usd per share) Earnings Per Share, Basic Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Subsidiary, ownership percentage cap Subsidiary, Ownership Percentage Cap Subsidiary, Ownership Percentage Cap Settlement of convertible note Proceeds From Settlement Of Convertible Notes Proceeds From Settlement Of Convertible Notes Ownership [Domain] Ownership [Domain] Purchases of property and equipment included in accounts payable Capital Expenditures Incurred but Not yet Paid Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Schedule of Goodwill [Table] Goodwill [Table] Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Total current liabilities Liabilities, Current Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member] Weighted average shares outstanding: Weighted Average Number of Shares Outstanding, Diluted [Abstract] TOTAL ASSETS Assets Long-term line of credit Long-Term Line of Credit Income tax receivables Income Taxes Receivable, Current Payments on notes payable Repayments of Notes Payable Purchases of property and equipment Payments to Acquire Property, Plant, and Equipment Other long-term obligations Other Liabilities, Noncurrent Movement in Standard Product Warranty Accrual [Roll Forward] Movement in Standard Product Warranty Accrual [Roll Forward] Share Repurchase Program Treasury Stock [Text Block] Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Termination Date Trading Arrangement Termination Date Commercial Commercial Segment [Member] Represents the commercial segment. Advances to affiliate Advances to Affiliate Schedule of Related Party Transactions, by Related Party [Table] Related Party Transaction [Table] 2026 Long-Term Debt, Maturity, Year One Entity Address, City or Town Entity Address, City or Town Debt Instrument [Axis] Debt Instrument [Axis] Less: reductions for revenue recognized Contract with Customer Liability Revenue Recognized During Period Amount of revenue recognized during period including amounts previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due.) Convertible note Convertible note Convertible Debt, Fair Value Disclosures Net (loss) income Net (loss) income Net (loss) income Net Income (Loss) Attributable to Parent Trading Arrangement: Trading Arrangement [Axis] Contract liabilities - noncurrent Increase (Decrease) in Contract with Customer Liability, Noncurrent Amount of increase (decrease) in noncurrent contract with customer liability. Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Loss Contingencies [Table] Loss Contingencies [Table] Exercise Price One Exercise Price One [Member] Exercise Price One Current borrowing capacity Line of Credit Facility, Current Borrowing Capacity Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year [Member] Entity File Number Entity File Number Cash paid for: Interest Paid, Including Capitalized Interest, Operating and Investing Activities [Abstract] Revenue Recognition Revenue from Contract with Customer [Text Block] Document Fiscal Year Focus Document Fiscal Year Focus Income Statement [Abstract] Income Statement [Abstract] Entity Address, Address Line One Entity Address, Address Line One Treasury stock purchase Treasury Stock, Value, Acquired, Cost Method Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] EFFECT OF EXCHANGE RATE CHANGES ON CASH Effect of Exchange Rate on Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Continuing Operations Name Forgone Recovery, Individual Name Document Period End Date Document Period End Date Long-term receivables, less current maturities Financing Receivable, after Allowance for Credit Loss, Noncurrent Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Interest coverage ratio Debt Instrument, Covenant, Interest Coverage Ratio, Minimum Debt Instrument, Covenant, Interest Coverage Ratio, Minimum Insider Trading Arrangements [Line Items] Line of Credit Facility [Line Items] Line of Credit Facility [Line Items] Change in fair value of convertible note Long-Term Debt, Change in Fair Value of Convertible Note Long-Term Debt, Change in Fair Value of Convertible Note Contract assets Contract with Customer, Asset, after Allowance for Credit Loss Timing of Transfer of Good or Service [Domain] Timing of Transfer of Good or Service [Domain] Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Cost of sales Cost of Revenue Recognized revenue Contract with Customer, Liability, Revenue Recognized Investments in and Advances to Affiliates, Schedule of Investments [Abstract] Adjustment to Compensation: Adjustment to Compensation [Axis] Prepaid expenses and other current assets Prepaid Expense and Other Assets, Current Convertible note and investment in affiliates, amount Convertible Note and Investment in Affiliates, Amount Convertible Note and Investment in Affiliates, Amount Document Transition Report Document Transition Report Document Quarterly Report Document Quarterly Report Transportation Transportation Segment [Member] Represents the transportation segment. Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Entity Current Reporting Status Entity Current Reporting Status Retained Earnings Retained Earnings [Member] Ownership percentage Subsidiary, Ownership Percentage, Noncontrolling Owner Amortization of debt issuance cost Amortization of Debt Issuance Costs Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Related Party, Type [Axis] Related and Nonrelated Parties [Axis] Basic (in shares) Weighted average common shares outstanding (in shares) Weighted Average Number of Shares Outstanding, Basic Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Schedule of Revenues from External Customers and Long-Lived Assets [Table] Schedule of Revenues from External Customers and Long-Lived Assets [Table] Executive Category: Executive Category [Axis] Name Awards Close in Time to MNPI Disclosures, Individual Name Entity Filer Category Entity Filer Category Revenue, remaining performance obligation Revenue, Remaining Performance Obligation, Amount Dilution associated with convertible notes (in shares) Incremental Common Shares Attributable to Dilutive Effect of Conversion of Debt Securities Income Statement Location [Domain] Statement of Income Location, Balance [Domain] Loss Contingencies [Line Items] Loss Contingencies [Line Items] Company Selected Measure Name Company Selected Measure Name