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Document And Entity Information - USD ($)
$ in Millions
 12 Months Ended
Sep. 26, 2015
Dec. 07, 2015
Mar. 28, 2015
Document Type 10-K    
Amendment Flag false    
Document Period End Date Sep. 26, 2015    
Document Fiscal Year Focus 2015    
Document Fiscal Period Focus FY    
Trading Symbol IMKTA    
Entity Registrant Name INGLES MARKETS INC    
Entity Central Index Key 0000050493    
Current Fiscal Year End Date --09-26    
Entity Filer Category Accelerated Filer    
Entity Current Reporting Status Yes    
Entity Voluntary Filers No    
Entity Well-known Seasoned Issuer No    
Entity Public Float     $ 680.0
Class A Common Stock      
Entity Common Stock, Shares Outstanding   13,925,326  
Class B Common Stock      
Entity Common Stock, Shares Outstanding   6,334,450