Document And Entity Information - USD ($) $ in Billions	12 Months Ended
	Apr. 28, 2018	Jun. 22, 2018	Oct. 27, 2017
Document Information [Line Items]
Entity Registrant Name	National Beverage Corp.
Entity Central Index Key	0000069891
Trading Symbol	fizz
Current Fiscal Year End Date	--04-28
Entity Filer Category	Large Accelerated Filer
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Well-known Seasoned Issuer	No
Entity Common Stock, Shares Outstanding (in shares)		46,618,240
Entity Public Float			$ 1.1
Document Type	10-K
Document Period End Date	Apr. 28, 2018
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	FY
Amendment Flag	false