v3.19.3
Document And Entity Information - shares
6 Months Ended
Nov. 02, 2019
Nov. 25, 2019
Entity Information [Line Items]    
Entity Registrant Name DAKTRONICS INC /SD/  
Entity Central Index Key 0000915779  
Current Fiscal Year End Date --05-02  
Entity Current Reporting Status Yes  
Entity Filer Category Accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   45,147,549
Document Fiscal Year Focus 2020  
Document Fiscal Period Focus Q2  
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Nov. 02, 2019