XML 80 R1.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Document And Entity Information - USD ($)
 12 Months Ended
Sep. 28, 2019
Dec. 05, 2019
Mar. 30, 2019
Document Type 10-K    
Amendment Flag false    
Document Period End Date Sep. 28, 2019    
Document Fiscal Year Focus 2019    
Document Fiscal Period Focus FY    
Title of 12(b) Security Class A Common Stock, $0.05 par value per share    
Trading Symbol IMKTA    
Security Exchange Name NASDAQ    
Entity Registrant Name INGLES MARKETS INC    
Entity Central Index Key 0000050493    
Current Fiscal Year End Date --09-28    
Entity Filer Category Accelerated Filer    
Entity Current Reporting Status Yes    
Entity Voluntary Filers No    
Entity Well-known Seasoned Issuer No    
Entity Small Business false    
Entity Emerging Growth Company false    
Entity Shell Company false    
Entity Public Float     $ 398,000,000
Class A Common Stock [Member]      
Entity Common Stock, Shares Outstanding   14,180,485  
Class B Common Stock [Member]      
Entity Common Stock, Shares Outstanding   6,079,291