v3.7.0.1
Document And Entity Information - USD ($)
$ in Millions
12 Months Ended
Apr. 29, 2017
Jul. 10, 2017
Oct. 28, 2016
Document Information [Line Items]      
Entity Registrant Name National Beverage Corp.    
Entity Central Index Key 0000069891    
Trading Symbol fizz    
Current Fiscal Year End Date --04-29    
Entity Filer Category Accelerated Filer    
Entity Current Reporting Status Yes    
Entity Voluntary Filers No    
Entity Well-known Seasoned Issuer No    
Entity Common Stock, Shares Outstanding (in shares)   46,585,150  
Entity Public Float     $ 552.9
Document Type 10-K    
Document Period End Date Apr. 29, 2017    
Document Fiscal Year Focus 2017    
Document Fiscal Period Focus FY    
Amendment Flag false