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Commitments and Contingencies (Narrative) (Details) - USD ($) | Jun. 28, 2025 | May 01, 2025
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Commitments and Contingencies [Abstract] |  |
Asset for insurance recovery receivable | $ 0 |
Agreement to receive a partial payment towards the settlement of the inventory loss claims, partial payment amount |  | $ 4,200,000

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- Definition Agreement to receive a partial payment towards the settlement of the inventory loss claims, partial payment amount. + References No definition available. + Details
Name: | imkta_AgreementToReceivePartialPaymentTowardsInventoryLossClaimSettlementPartialPaymentAmount
Namespace Prefix: | imkta_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- References No definition available. + Details
Name: | us-gaap_CommitmentsAndContingenciesDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Amount of receivable related to a loss contingency accrual. For example, an insurance recovery receivable. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 460 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482425/460-10-50-3 + Details
Name: | us-gaap_LossContingencyReceivable
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant