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Label Element Value
Stockholders' Equity, Change in Reporting Entity us-gaap_StockholdersEquityChangeInReportingEntity $ 30,000
Adjustments to Additional Paid in Capital, Share-based Compensation, Stock Options, Requisite Service Period Recognition us-gaap_AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition 4,314,000
Adjustments to Additional Paid in Capital, Tax Receivable Agreement shak_AdjustmentstoAdditionalPaidinCapitalTaxReceivableAgreement 31,094,000
Stock Issued During Period, Value, New Issues us-gaap_StockIssuedDuringPeriodValueNewIssues 109,262,000
Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation 0
Limited Liability Company (LLC) Members' Equity, Unit-based Compensation us-gaap_LimitedLiabilityCompanyLLCMembersEquityUnitBasedCompensation 7,731,000
Secondary Offering and Redemption of Units [Member]  
Stock Issued During Period, Value, Conversion of Units us-gaap_StockIssuedDuringPeriodValueConversionOfUnits 0
Merger [Member]  
Stock Issued During Period, Value, Conversion of Units us-gaap_StockIssuedDuringPeriodValueConversionOfUnits 0
Retained Earnings [Member]  
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest us-gaap_ProfitLoss 4,273,000
Noncontrolling Interest [Member]  
Stockholders' Equity, Change in Reporting Entity us-gaap_StockholdersEquityChangeInReportingEntity 71,339,000
Other Comprehensive Income (Loss), Net of Tax us-gaap_OtherComprehensiveIncomeLossNetOfTax (6,000)
Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation (987,000)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest us-gaap_ProfitLoss 11,900,000
Noncontrolling Interest [Member] | Secondary Offering and Redemption of Units [Member]  
Stock Issued During Period, Value, Conversion of Units us-gaap_StockIssuedDuringPeriodValueConversionOfUnits (19,934,000)
Noncontrolling Interest [Member] | Merger [Member]  
Stock Issued During Period, Value, Conversion of Units us-gaap_StockIssuedDuringPeriodValueConversionOfUnits (5,908,000)
Additional Paid-in Capital [Member]  
Stockholders' Equity, Change in Reporting Entity us-gaap_StockholdersEquityChangeInReportingEntity (75,182,000)
Adjustments to Additional Paid in Capital, Share-based Compensation, Stock Options, Requisite Service Period Recognition us-gaap_AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition 4,314,000
Adjustments to Additional Paid in Capital, Tax Receivable Agreement shak_AdjustmentstoAdditionalPaidinCapitalTaxReceivableAgreement 31,094,000
Stock Issued During Period, Value, New Issues us-gaap_StockIssuedDuringPeriodValueNewIssues 109,256,000
Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation 987,000
Additional Paid-in Capital [Member] | Secondary Offering and Redemption of Units [Member]  
Stock Issued During Period, Value, Conversion of Units us-gaap_StockIssuedDuringPeriodValueConversionOfUnits 19,934,000
Additional Paid-in Capital [Member] | Merger [Member]  
Stock Issued During Period, Value, Conversion of Units us-gaap_StockIssuedDuringPeriodValueConversionOfUnits 5,908,000
Member Units [Member]  
Stockholders' Equity, Change in Reporting Entity us-gaap_StockholdersEquityChangeInReportingEntity 3,843,000
Limited Liability Company (LLC) Members' Equity, Unit-based Compensation us-gaap_LimitedLiabilityCompanyLLCMembersEquityUnitBasedCompensation 7,731,000
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest us-gaap_ProfitLoss (13,049,000)
Common Class A [Member] | Common Stock [Member]  
Stockholders' Equity, Change in Reporting Entity us-gaap_StockholdersEquityChangeInReportingEntity $ 6,000
Stockholders Equity, Change in Reporting Entity, Shares shak_StockholdersEquityChangeinReportingEntityShares 5,968,841
Stock Issued During Period, Value, New Issues us-gaap_StockIssuedDuringPeriodValueNewIssues $ 6,000
Common Class A [Member] | Common Stock [Member] | Secondary Offering and Redemption of Units [Member]  
Stock Issued During Period, Value, Conversion of Units us-gaap_StockIssuedDuringPeriodValueConversionOfUnits $ 6,000
Stock Issued During Period, Shares, Conversion of Units us-gaap_StockIssuedDuringPeriodSharesConversionOfUnits 6,003,308
Common Class A [Member] | Common Stock [Member] | Merger [Member]  
Stock Issued During Period, Value, Conversion of Units us-gaap_StockIssuedDuringPeriodValueConversionOfUnits $ 2,000
Common Class B [Member] | Common Stock [Member]  
Stockholders' Equity, Change in Reporting Entity us-gaap_StockholdersEquityChangeInReportingEntity $ 24,000
Stockholders Equity, Change in Reporting Entity, Shares shak_StockholdersEquityChangeinReportingEntityShares 24,191,853
Common Class B [Member] | Common Stock [Member] | Secondary Offering and Redemption of Units [Member]  
Stock Issued During Period, Value, Conversion of Units us-gaap_StockIssuedDuringPeriodValueConversionOfUnits $ (6,000)
Stock Issued During Period, Shares, Conversion of Units us-gaap_StockIssuedDuringPeriodSharesConversionOfUnits (6,003,308)
Common Class B [Member] | Common Stock [Member] | Merger [Member]  
Stock Issued During Period, Value, Conversion of Units us-gaap_StockIssuedDuringPeriodValueConversionOfUnits $ (2,000)