v3.10.0.1
Document And Entity Information - shares
3 Months Ended
Jul. 28, 2018
Sep. 04, 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 Common Stock, Shares Outstanding (in shares)   46,625,240
Document Type 10-Q  
Document Period End Date Jul. 28, 2018  
Document Fiscal Year Focus 2019  
Document Fiscal Period Focus Q1  
Amendment Flag false