v3.8.0.1
Document And Entity Information - shares
9 Months Ended
Jan. 27, 2018
Mar. 02, 2018
Document Information [Line Items]    
Entity Registrant Name National Beverage Corp.  
Entity Central Index Key 0000069891  
Trading Symbol fizz  
Current Fiscal Year End Date --04-28  
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)   46,608,690
Document Type 10-Q  
Document Period End Date Jan. 27, 2018  
Document Fiscal Year Focus 2018  
Document Fiscal Period Focus Q3  
Amendment Flag false