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RELATED PARTY TRANSACTIONS - Tax Receivable Agreement (Details) - USD ($) $ in Thousands | Jun. 26, 2024 | Dec. 27, 2023
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Related Party Transactions [Abstract] |  |
Liabilities under tax receivable agreement, net of current portion | $ 246,878 | $ 235,613

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- Definition Tax Receivable Agreement Liability, Noncurrent + References No definition available. + Details
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Namespace Prefix: | shak_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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