| Document And Entity Information | Jun. 29, 2022 |
| Document Information [Line Items] | |
| Entity, Registrant Name | National Beverage Corp. |
| Document, Type | 8-K |
| Document, Period End Date | Jun. 29, 2022 |
| Entity, Incorporation, State or Country Code | DE |
| Entity, File Number | 1-14170 |
| Entity, Tax Identification Number | 59-2605822 |
| Entity, Address, Address Line One | 8100 sw Tenth Street, Suite 4000 |
| Entity, Address, City or Town | Fort Lauderdale |
| Entity, Address, State or Province | FL |
| Entity, Address, Postal Zip Code | 33324 |
| City Area Code | 954 |
| Local Phone Number | 581-0922 |
| Title of 12(b) Security | Common Stock |
| Trading Symbol | FIZZ |
| Security Exchange Name | NASDAQ |
| 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 | 0000069891 |
