Document and Entity Information - USD ($)
$ in Millions
12 Months Ended
Apr. 01, 2018
May 25, 2018
Oct. 01, 2017
Document and Entity Information [Abstract]      
Entity Registrant Name HAWKINS INC    
Entity Central Index Key 0000046250    
Document Type 10-K    
Document Period End Date Apr. 01, 2018    
Amendment Flag false    
Document Fiscal Year Focus 2018    
Document Fiscal Period Focus FY    
Current Fiscal Year End Date --04-01    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status No    
Entity Filer Category Accelerated Filer    
Entity Public Float     $ 391.3
Entity Common Stock, Shares Outstanding   10,683,514