XML 20 R10.htm IDEA: XBRL DOCUMENT v3.22.0.1

Allowance For Doubtful Accounts	3 Months Ended
	Dec. 25, 2021
Allowance For Doubtful Accounts [Abstract]
Allowance For Doubtful Accounts	D. ALLOWANCE FOR DOUBTFUL ACCOUNTS  Receivables are presented net of an allowance for doubtful accounts of $302,000 at December 25, 2021 and $157,000 at September 25, 2021.

X

- Definition

Allowance for doubtful accounts.

+ References

No definition available.

+ Details

Name:	imkta_AllowanceForDoubtfulAccountsTextBlock
Namespace Prefix:	imkta_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_ReceivablesAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration