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Cover page - USD ($)
 12 Months Ended
Apr. 30, 2022
Jun. 02, 2022
Oct. 30, 2021
Document Information [Line Items]      
Document Type 10-K    
Document Annual Report true    
Current Fiscal Year End Date --04-30    
Document Period End Date Apr. 30, 2022    
Document Transition Report false    
Entity File Number 0-23246    
Entity Registrant Name Daktronics, Inc.    
Entity Incorporation, State or Country Code SD    
Entity Tax Identification Number 46-0306862    
Entity Address, Address Line One 201 Daktronics Drive    
Entity Address, City or Town Brookings    
Entity Address, State or Province SD    
Entity Address, Postal Zip Code 57006    
City Area Code 605    
Local Phone Number 692-0200    
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    
ICFR Auditor Attestation Flag true    
Entity Shell Company false    
Entity Public Float     $ 258,641,294
Entity Common Stock, Shares Outstanding   45,033,839  
Documents Incorporated by Reference
DOCUMENTS INCORPORATED BY REFERENCE
Portions of the Registrant’s Proxy Statement for its Annual Meeting of Shareholders to be held August 31, 2022 are incorporated by reference in Part III of the Form 10-K, as indicated in Items 10 through 14 of Part III.
Auditor Name: Deloitte & Touche LLP
Location: Minneapolis, Minnesota
Auditor Firm ID: PCAOB No. 34
    
Entity Central Index Key 0000915779    
Document Fiscal Year Focus 2022    
Document Fiscal Period Focus FY    
Amendment Flag false    
Preferred Stock      
Document Information [Line Items]      
Title of 12(b) Security Preferred Stock Purchase Rights    
Trading Symbol DAKT    
Security Exchange Name NASDAQ    
Common Stock      
Document Information [Line Items]      
Title of 12(b) Security Common Stock, No Par Value    
Trading Symbol DAKT    
Security Exchange Name NASDAQ