Document And Entity Information - USD ($)	12 Months Ended
	May 01, 2021	Jun. 29, 2021	Oct. 26, 2018
Document Information [Line Items]
Entity Central Index Key	0000069891
Entity Registrant Name	National Beverage Corp.
Amendment Flag	false
Current Fiscal Year End Date	--05-01
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2021
Document Type	10-K
Document Annual Report	true
Document Period End Date	May 01, 2021
Document Transition Report	false
Entity File Number	1-14170
Entity Incorporation, State or Country Code	DE
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, par value $.01 per share
Trading Symbol	FIZZ
Security Exchange Name	NASDAQ
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Public Float			$ 912,000,000
Entity Common Stock, Shares Outstanding		93,307,746
ICFR Auditor Attestation Flag	true