| Document And Entity Information | May 27, 2021 |
| Document Information [Line Items] | |
| Entity, Registrant Name | Daktronics, Inc. |
| Document, Type | 8-K |
| Document, Period End Date | May 27, 2021 |
| Entity, Incorporation, State or Country Code | SD |
| Entity, File Number | 0-23246 |
| 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 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity, Emerging Growth Company | false |
| Amendment Flag | false |
| Entity, Central Index Key | 0000915779 |
| CommonStockNoParValue Custom [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Common Stock, No Par Value |
| Trading Symbol | DAKT |
| Security Exchange Name | NASDAQ |
| PreferredStockPurchaseRights Custom [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Preferred Stock Purchase Rights |
| Trading Symbol | DAKT |
| Security Exchange Name | NASDAQ |
