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RELATED PARTY TRANSACTIONS - Tax Receivable Agreement (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 27, 2023 | Dec. 28, 2022 | Dec. 29, 2021
Related Party Transactions [Abstract] |  |  |
Percentage of tax benefits due to equity owners | 85.00% |  |
Payments to related parties | $ 0 | $ 0 | $ 0
Establishment of liabilities under tax receivable agreement | $ 235,613 | $ 234,893 |

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- Definition Tax Receivable Agreement Liability, Current and 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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- Definition Tax receivable agreement payments to related parties. + References No definition available. + Details
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Namespace Prefix: | shak_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Tax Receivable Agreement, Percentage of Tax Benefits Due to Equity Owners + References No definition available. + Details
Name: | shak_TaxReceivableAgreementPercentageofTaxBenefitsDuetoEquityOwners
Namespace Prefix: | shak_
Data Type: | dtr-types1:percentItemType
Balance Type: | na
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