v3.19.2
Document And Entity Information - USD ($)
$ in Billions
12 Months Ended
Apr. 27, 2019
Jun. 24, 2019
Oct. 26, 2018
Document Information [Line Items]      
Entity Registrant Name National Beverage Corp.    
Entity Central Index Key 0000069891    
Trading Symbol fizz    
Current Fiscal Year End Date --04-27    
Entity Filer Category Large Accelerated Filer    
Entity Current Reporting Status Yes    
Entity Voluntary Filers No    
Entity Well-known Seasoned Issuer No    
Entity Emerging Growth Company false    
Entity Small Business false    
Entity Common Stock, Shares Outstanding (in shares)   46,645,540  
Entity Public Float     $ 1.2
Entity Shell Company false    
Document Type 10-K    
Document Period End Date Apr. 27, 2019    
Document Fiscal Year Focus 2019    
Document Fiscal Period Focus FY    
Amendment Flag false