v3.10.0.1
Document And Entity Information - shares
9 Months Ended
Jan. 26, 2019
Mar. 03, 2019
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 Emerging Growth Company false  
Entity Small Business false  
Entity Common Stock, Shares Outstanding (in shares)   46,642,540
Document Type 10-Q  
Document Period End Date Jan. 26, 2019  
Document Fiscal Year Focus 2019  
Document Fiscal Period Focus Q3  
Amendment Flag false