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Commitments and Contingencies (Narrative) (Details) - USD ($) | May 08, 2025 | Dec. 28, 2024
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Asset for insurance recovery receivable |  | $ 0
Subsequent Event [Member] |  |
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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- 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

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- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |