$SHAK
Shake Shack Inc. Stock $shak

$shak Overview Financials Valuation SEC Filings Company Website

2019 Q4 Form 10-K Financial Statement

#000162053321000027 Filed on February 26, 2021

Income Statement

Concept	2019 Q4	2019 Q3	2019 Q2
Revenue	$151.4M	$157.8M	$152.7M
YoY Change	21.86%	31.86%	31.33%
Cost Of Revenue	$85.00M	$85.70M	$83.00M
YoY Change	22.83%	162.06%	162.01%
Gross Profit	$66.50M	$72.10M	$69.70M
YoY Change	20.69%	-17.07%	-17.62%
Gross Profit Margin	43.91%	45.7%	45.64%
Selling, General & Admin	$36.60M	$34.20M	$30.90M
YoY Change	28.42%	35.18%	37.95%
% of Gross Profit	55.04%	47.43%	44.33%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$11.15M	$10.47M	$9.799M
YoY Change	37.82%	40.8%	40.63%
% of Gross Profit	16.77%	14.53%	14.06%
Operating Expenses	$65.60M	$149.6M	$140.8M
YoY Change	26.64%	35.62%	36.39%
Operating Profit	$488.0K	$8.164M	$11.87M
YoY Change	-82.79%	-12.62%	-8.81%
Interest Expense	$100.0K	$133.0K	$97.00K
YoY Change	-133.33%	-77.53%	-84.18%
% of Operating Profit	20.49%	1.63%	0.82%
Other Income/Expense, Net	$800.0K	$0.00	$0.00
YoY Change	700.0%		-100.0%
Pretax Income	$1.400M	$8.279M	$12.22M
YoY Change	-46.15%	-9.88%	-4.61%
Income Tax	$3.400M	-$3.144M	$1.050M
% Of Pretax Income	242.86%	-37.98%	8.59%
Net Earnings	-$2.093M	$10.34M	$9.030M
YoY Change	118.48%	105.85%	18.75%
Net Earnings / Revenue	-1.38%	6.56%	5.91%
Basic Earnings Per Share		$0.32	$0.30
Diluted Earnings Per Share	-$61.95K	$0.31	$0.29
COMMON SHARES
Basic Shares Outstanding		31.96M shares	30.12M shares
Diluted Shares Outstanding		32.92M shares	31.02M shares

Balance Sheet

Concept	2019 Q4	2019 Q3	2019 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments	$73.60M	$80.80M	$65.80M
YoY Change	-15.3%	-11.31%	-28.71%
Cash & Equivalents	$37.10M	$44.51M	$29.73M
Short-Term Investments	$36.50M	$36.30M	$36.10M
Other Short-Term Assets	$1.900M	$1.700M	$5.700M
YoY Change	-5.0%	-19.05%	280.0%
Inventory	$2.221M	$1.782M	$1.692M
Prepaid Expenses
Receivables	$9.970M	$15.09M	$13.66M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$87.68M	$99.44M	$86.87M
YoY Change	-13.3%	-4.31%	-14.92%
LONG-TERM ASSETS
Property, Plant & Equipment	$314.9M	$304.4M	$285.9M
YoY Change	20.24%	25.92%	31.89%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets	$11.49M	$10.65M	$9.386M
YoY Change	128.57%	189.3%	144.75%
Total Long-Term Assets	$880.6M	$863.8M	$811.4M
YoY Change	72.86%	76.87%	86.68%
TOTAL ASSETS
Total Short-Term Assets	$87.68M	$99.44M	$86.87M
Total Long-Term Assets	$880.6M	$863.8M	$811.4M
Total Assets	$968.3M	$963.3M	$898.2M
YoY Change	58.59%	62.63%	67.35%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$14.30M	$15.87M	$3.828M
YoY Change	14.7%	64.34%	-54.12%
Accrued Expenses	$24.14M	$27.98M	$25.57M
YoY Change	5.88%	22.93%	59.91%
Deferred Revenue	$511.0K	$421.0K	$389.0K
YoY Change	66.45%	44.67%	27.54%
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$1.900M	$1.800M	$1.800M
YoY Change
Total Short-Term Liabilities	$99.39M	$95.97M	$79.01M
YoY Change	65.8%	96.66%	103.63%
LONG-TERM LIABILITIES
Long-Term Debt	$3.600M	$3.300M	$3.200M
YoY Change	-82.69%	-83.42%	-82.51%
Other Long-Term Liabilities	$15.33M	$14.91M	$13.61M
YoY Change	46.01%	98.22%	87.62%
Total Long-Term Liabilities	$15.33M	$14.91M	$13.61M
YoY Change	46.01%	98.22%	87.62%
TOTAL LIABILITIES
Total Short-Term Liabilities	$99.39M	$95.97M	$79.01M
Total Long-Term Liabilities	$15.33M	$14.91M	$13.61M
Total Liabilities	$646.3M	$645.0M	$597.6M
YoY Change	91.73%	101.09%	113.2%
SHAREHOLDERS EQUITY
Retained Earnings	$54.37M	$56.46M	$46.12M
YoY Change	78.82%	80.03%	75.1%
Common Stock
YoY Change
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$298.8M	$290.6M	$255.0M
YoY Change
Total Liabilities & Shareholders Equity	$968.3M	$963.3M	$898.2M
YoY Change	58.59%	62.63%	67.35%

Cashflow Statement

Concept	2019 Q4	2019 Q3	2019 Q2
OPERATING ACTIVITIES
Net Income	-$2.093M	$10.34M	$9.030M
YoY Change	118.48%	105.85%	18.75%
Depreciation, Depletion And Amortization	$11.15M	$10.47M	$9.799M
YoY Change	37.82%	40.8%	40.63%
Cash From Operating Activities	$16.82M	$37.15M	$18.69M
YoY Change	-25.61%	69.48%	-14.03%
INVESTING ACTIVITIES
Capital Expenditures	-$25.61M	-$24.90M	-$31.01M
YoY Change	-6.5%	4.71%	66.36%
Acquisitions
YoY Change
Other Investing Activities	-$210.0K	-$260.0K	$11.68M
YoY Change	-32.26%	-23.53%	-3993.33%
Cash From Investing Activities	-$25.82M	-$25.16M	-$19.34M
YoY Change	-6.75%	4.31%	2.11%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	1.590M	2.790M	-1.520M
YoY Change	194.44%	350.0%	-204.83%
NET CHANGE
Cash From Operating Activities	16.82M	37.15M	18.69M
Cash From Investing Activities	-25.82M	-25.16M	-19.34M
Cash From Financing Activities	1.590M	2.790M	-1.520M
Net Change In Cash	-7.410M	14.78M	-2.170M
YoY Change	63.22%	-1035.44%	-151.06%
FREE CASH FLOW
Cash From Operating Activities	$16.82M	$37.15M	$18.69M
Capital Expenditures	-$25.61M	-$24.90M	-$31.01M
Free Cash Flow	$42.43M	$62.05M	$49.70M
YoY Change	-15.14%	35.78%	23.08%

Facts In Submission

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CY2020	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-30
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CY2020	dei	Entity File Number EntityFileNumber	001-36823
CY2020	dei	Entity Registrant Name EntityRegistrantName	SHAKE SHACK INC.
CY2020	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
CY2020	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	47-1941186
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CY2020	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	0	USD
CY2019	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	0	USD
CY2018	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-3000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	0	USD
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	0	USD
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	-16000	USD
CY2020	shak	Other Comprehensive Income Loss Securities Available For Sale Adjustment Excluding Arising During Period After Tax OtherComprehensiveIncomeLossSecuritiesAvailableForSaleAdjustmentExcludingArisingDuringPeriodAfterTax	1000	USD
CY2019	shak	Other Comprehensive Income Loss Securities Available For Sale Adjustment Excluding Arising During Period After Tax OtherComprehensiveIncomeLossSecuritiesAvailableForSaleAdjustmentExcludingArisingDuringPeriodAfterTax	2000	USD
CY2018	shak	Other Comprehensive Income Loss Securities Available For Sale Adjustment Excluding Arising During Period After Tax OtherComprehensiveIncomeLossSecuritiesAvailableForSaleAdjustmentExcludingArisingDuringPeriodAfterTax	13000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	1000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	2000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	13000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	-45533000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	24130000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	21961000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	-3376000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	4301000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	6772000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-42157000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	19829000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	15189000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	0	USD
CY2017Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	224479000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	21948000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	13000	USD
CY2018	us-gaap	Adjustments To Additional Paid In Capital Share Based Compensation Stock Options Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition	6250000	USD
CY2018	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	4523000	USD
CY2018	shak	Adjustmentsto Additional Paidin Capital Tax Receivable Agreement AdjustmentstoAdditionalPaidinCapitalTaxReceivableAgreement	18567000	USD
CY2018	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	751000	USD
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	273455000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	24128000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	2000	USD
CY2019	us-gaap	Adjustments To Additional Paid In Capital Share Based Compensation Stock Options Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition	7700000	USD
CY2019	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	7805000	USD
CY2019	us-gaap	Stock Issued During Period Value Conversion Of Units StockIssuedDuringPeriodValueConversionOfUnits	0	USD
CY2019	shak	Adjustmentsto Additional Paidin Capital Tax Receivable Agreement AdjustmentstoAdditionalPaidinCapitalTaxReceivableAgreement	5408000	USD
CY2019	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	1708000	USD
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	321985000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	-45534000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	1000	USD
CY2020	us-gaap	Adjustments To Additional Paid In Capital Share Based Compensation Stock Options Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition	5600000	USD
CY2020	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	6215000	USD
CY2020	shak	Adjustmentsto Additional Paidin Capital Tax Receivable Agreement AdjustmentstoAdditionalPaidinCapitalTaxReceivableAgreement	1707000	USD
CY2020	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	478000	USD
CY2020	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	144997000	USD
CY2020Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	434493000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	-45534000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	24128000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	21948000	USD
CY2020	us-gaap	Depreciation Depreciation	48801000	USD
CY2019	us-gaap	Depreciation Depreciation	40392000	USD
CY2018	us-gaap	Depreciation Depreciation	29000000	USD
CY2020	us-gaap	Capitalized Computer Software Amortization1 CapitalizedComputerSoftwareAmortization1	1444000	USD
CY2019	us-gaap	Capitalized Computer Software Amortization1 CapitalizedComputerSoftwareAmortization1	312000	USD
CY2018	us-gaap	Capitalized Computer Software Amortization1 CapitalizedComputerSoftwareAmortization1	0	USD
CY2019	shak	Amortizationofoperatingleaseassets Amortizationofoperatingleaseassets	40068000	USD
CY2020	shak	Amortizationofoperatingleaseassets Amortizationofoperatingleaseassets	44910000	USD
CY2018	shak	Amortizationofoperatingleaseassets Amortizationofoperatingleaseassets	0	USD
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	5560000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	7505000	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	6143000	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-1356000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-6064000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	788000	USD
CY2020	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	66000	USD
CY2019	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	170000	USD
CY2018	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	72000	USD
CY2020	us-gaap	Marketable Securities Realized Gain Loss Excluding Other Than Temporary Impairments MarketableSecuritiesRealizedGainLossExcludingOtherThanTemporaryImpairments	79000	USD
CY2019	us-gaap	Marketable Securities Realized Gain Loss Excluding Other Than Temporary Impairments MarketableSecuritiesRealizedGainLossExcludingOtherThanTemporaryImpairments	22000	USD
CY2018	us-gaap	Marketable Securities Realized Gain Loss Excluding Other Than Temporary Impairments MarketableSecuritiesRealizedGainLossExcludingOtherThanTemporaryImpairments	-16000	USD
CY2020	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-10151000	USD
CY2019	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-1352000	USD
CY2018	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-917000	USD
CY2020	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-1937000	USD
CY2019	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	338000	USD
CY2018	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	78000	USD
CY2020	us-gaap	Unrealized Gain Loss On Securities UnrealizedGainLossOnSecurities	-59000	USD
CY2019	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	194000	USD
CY2018	us-gaap	Unrealized Gain Loss On Securities UnrealizedGainLossOnSecurities	0	USD
CY2020	shak	Gain Losson Sublease GainLossonSublease	0	USD
CY2019	shak	Gain Losson Sublease GainLossonSublease	0	USD
CY2018	shak	Gain Losson Sublease GainLossonSublease	672000	USD
CY2020	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-1006000	USD
CY2019	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-10726000	USD
CY2018	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-5530000	USD
CY2020	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	667000	USD
CY2019	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	472000	USD
CY2018	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	491000	USD
CY2020	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	5197000	USD
CY2019	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-134000	USD
CY2018	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	270000	USD
CY2020	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	2940000	USD
CY2019	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	8245000	USD
CY2018	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	2726000	USD
CY2020	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	4626000	USD
CY2019	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	4248000	USD
CY2018	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	3156000	USD
CY2020	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	2170000	USD
CY2019	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	9856000	USD
CY2018	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	7979000	USD
CY2020	us-gaap	Increase Decrease In Employee Related Liabilities IncreaseDecreaseInEmployeeRelatedLiabilities	-1010000	USD
CY2019	us-gaap	Increase Decrease In Employee Related Liabilities IncreaseDecreaseInEmployeeRelatedLiabilities	799000	USD
CY2018	us-gaap	Increase Decrease In Employee Related Liabilities IncreaseDecreaseInEmployeeRelatedLiabilities	4424000	USD
CY2020	us-gaap	Increase Decrease In Other Current Liabilities IncreaseDecreaseInOtherCurrentLiabilities	1752000	USD
CY2019	us-gaap	Increase Decrease In Other Current Liabilities IncreaseDecreaseInOtherCurrentLiabilities	1438000	USD
CY2018	us-gaap	Increase Decrease In Other Current Liabilities IncreaseDecreaseInOtherCurrentLiabilities	860000	USD
CY2020	us-gaap	Increase Decrease In Deferred Liabilities IncreaseDecreaseInDeferredLiabilities	0	USD
CY2019	us-gaap	Increase Decrease In Deferred Liabilities IncreaseDecreaseInDeferredLiabilities	0	USD
CY2018	us-gaap	Increase Decrease In Deferred Liabilities IncreaseDecreaseInDeferredLiabilities	1247000	USD
CY2020	shak	Increase Decreasein Longtermoperatingleaseliabilities IncreaseDecreaseinLongtermoperatingleaseliabilities	-33724000	USD
CY2019	shak	Increase Decreasein Longtermoperatingleaseliabilities IncreaseDecreaseinLongtermoperatingleaseliabilities	-37308000	USD
CY2018	shak	Increase Decreasein Longtermoperatingleaseliabilities IncreaseDecreaseinLongtermoperatingleaseliabilities	0	USD
CY2020	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	5375000	USD
CY2019	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	1372000	USD
CY2018	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	6208000	USD
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	37350000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	89857000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	85395000	USD
CY2020	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	69038000	USD
CY2019	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	106507000	USD
CY2018	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	87525000	USD
CY2020	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	20359000	USD
CY2019	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	1179000	USD
CY2018	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	1223000	USD
CY2020	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	20000000	USD
CY2019	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	27000000	USD
CY2018	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	2144000	USD
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-69397000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-80686000	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-86604000	USD
CY2020	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	50000000	USD
CY2019	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	0	USD
CY2018	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	0	USD
CY2020	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	50000000	USD
CY2019	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	0	USD
CY2018	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	0	USD
CY2020	shak	Proceeds From Deemed Landlord Financing ProceedsFromDeemedLandlordFinancing	0	USD
CY2019	shak	Proceeds From Deemed Landlord Financing ProceedsFromDeemedLandlordFinancing	0	USD
CY2018	shak	Proceeds From Deemed Landlord Financing ProceedsFromDeemedLandlordFinancing	1382000	USD
CY2020	shak	Payments On Deemed Landlord Financing PaymentsOnDeemedLandlordFinancing	0	USD
CY2020	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	144997000	USD
CY2019	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	0	USD
CY2019	shak	Payments On Deemed Landlord Financing PaymentsOnDeemedLandlordFinancing	0	USD
CY2018	shak	Payments On Deemed Landlord Financing PaymentsOnDeemedLandlordFinancing	702000	USD
CY2020	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	64000	USD
CY2019	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	286000	USD
CY2018	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	0	USD
CY2018	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	0	USD
CY2020	shak	Payments Onprincipal On Finance Lease Liabilities PaymentsOnprincipalOnFinanceLeaseLiabilities	2206000	USD
CY2019	shak	Payments Onprincipal On Finance Lease Liabilities PaymentsOnprincipalOnFinanceLeaseLiabilities	1926000	USD
CY2018	shak	Payments Onprincipal On Finance Lease Liabilities PaymentsOnprincipalOnFinanceLeaseLiabilities	0	USD
CY2020	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	478000	USD
CY2019	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	1708000	USD
CY2018	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	751000	USD
CY2020	shak	Payments For Tax Receivable Agreement PaymentsForTaxReceivableAgreement	6643000	USD
CY2019	shak	Payments For Tax Receivable Agreement PaymentsForTaxReceivableAgreement	707000	USD
CY2018	shak	Payments For Tax Receivable Agreement PaymentsForTaxReceivableAgreement	0	USD
CY2020	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	8033000	USD
CY2019	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	9201000	USD
CY2018	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	5472000	USD
CY2020	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	1818000	USD
CY2019	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	1396000	USD
CY2018	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	949000	USD
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	141821000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	3178000	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	4452000	USD
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	109774000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	12349000	USD
CY2018	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	3243000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	37099000	USD
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	24750000	USD
CY2017Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	21507000	USD
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	146873000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	37099000	USD
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	24750000	USD
CY2020Q4	us-gaap	Number Of Restaurants NumberOfRestaurants	311	Restaurant
CY2020	us-gaap	Fiscal Period FiscalPeriod	<div style="margin-bottom:6pt;margin-top:12pt"><span style="color:#619f42;font-family:'Arial Narrow',sans-serif;font-size:12pt;font-weight:700;line-height:120%">Fiscal Year</span></div><div style="margin-bottom:10pt;text-align:justify"><span style="color:#000000;font-family:'Arial Narrow',sans-serif;font-size:10pt;font-weight:400;line-height:120%">We operate on a 52/53 week fiscal year ending on the last Wednesday in December. Fiscal year 2020 contained 53 weeks and ended on December 30, 2020 ("fiscal 2020"). Fiscal years 2019 and 2018 each contained 52 weeks and ended on December 25, 2019 ("fiscal 2019") and December 26, 2018 ("fiscal 2018"), respectively. Unless otherwise stated, references to years in this report relate to fiscal years.</span></div>
CY2020	us-gaap	Use Of Estimates UseOfEstimates	<div style="margin-bottom:6pt;margin-top:12pt"><span style="color:#619f42;font-family:'Arial Narrow',sans-serif;font-size:12pt;font-weight:700;line-height:120%">Use of Estimates</span></div><div style="margin-bottom:10pt;text-align:justify"><span style="color:#000000;font-family:'Arial Narrow',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The preparation of these consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of sales and expenses during the reporting period. Significant estimates inherent in the preparation of the consolidated financial statements include useful lives and impairments of long-lived tangible and intangible assets, accounting for income taxes and related uncertain tax positions, the valuation of equity-based compensation and awards, and reserves for litigation and other contingencies, amongst others. Actual results could differ from those estimates.</span></div>
CY2020	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	1	operating_segment
CY2020	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	1	reportable_segment
CY2020Q4	us-gaap	Indefinite Lived Intangible Assets Excluding Goodwill IndefiniteLivedIntangibleAssetsExcludingGoodwill	1437000	USD
CY2019Q4	us-gaap	Indefinite Lived Intangible Assets Excluding Goodwill IndefiniteLivedIntangibleAssetsExcludingGoodwill	1437000	USD
CY2020	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	1449000	USD
CY2019	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	857000	USD
CY2018	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	399000	USD
CY2020	shak	Lessee Leasing Arrangements Numberof Renewal Options LesseeLeasingArrangementsNumberofRenewalOptions	2	renewal_option
CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	522867000	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	594519000	USD
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	459310000	USD
CY2020Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	16937000	USD
CY2020Q4	shak	Contract With Customer Gift Card Liability ContractWithCustomerGiftCardLiability	2637000	USD
CY2019Q4	shak	Contract With Customer Gift Card Liability ContractWithCustomerGiftCardLiability	2258000	USD
CY2020Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	608000	USD
CY2019Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	511000	USD
CY2020Q4	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	12151000	USD
CY2019Q4	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	11310000	USD
CY2020	shak	Increase Decrease In Contract With Customer Gift Card Liability IncreaseDecreaseInContractWithCustomerGiftCardLiability	537000	USD
CY2019	shak	Increase Decrease In Contract With Customer Gift Card Liability IncreaseDecreaseInContractWithCustomerGiftCardLiability	524000	USD
CY2020	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	723000	USD
CY2019	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	536000	USD
CY2020Q4	shak	Cash Cash Equivalentsand Availableforsale Debt Securities Amortized Cost CashCashEquivalentsandAvailableforsaleDebtSecuritiesAmortizedCost	183747000	USD
CY2020Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	13000	USD
CY2020Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	0	USD
CY2020Q4	shak	Cash Cash Equivalentsand Availableforsale Debt Securities CashCashEquivalentsandAvailableforsaleDebtSecurities	183760000	USD
CY2020Q4	us-gaap	Cash And Cash Equivalents Fair Value Disclosure CashAndCashEquivalentsFairValueDisclosure	146873000	USD
CY2020Q4	us-gaap	Available For Sale Securities AvailableForSaleSecurities	36887000	USD
CY2019Q4	shak	Cash Cash Equivalentsand Availableforsale Debt Securities Amortized Cost CashCashEquivalentsandAvailableforsaleDebtSecuritiesAmortizedCost	73535000	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	72000	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	0	USD
CY2019Q4	shak	Cash Cash Equivalentsand Availableforsale Debt Securities CashCashEquivalentsandAvailableforsaleDebtSecurities	73607000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents Fair Value Disclosure CashAndCashEquivalentsFairValueDisclosure	37099000	USD
CY2019Q4	us-gaap	Available For Sale Securities AvailableForSaleSecurities	36508000	USD
CY2020	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	359000	USD
CY2019	us-gaap	Investment Income Interest InvestmentIncomeInterest	0	USD
CY2018	us-gaap	Investment Income Interest InvestmentIncomeInterest	9000	USD
CY2020	us-gaap	Other Income OtherIncome	379000	USD
CY2019	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	1244000	USD
CY2018	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	1392000	USD
CY2020	us-gaap	Investment Income Interest InvestmentIncomeInterest	0	USD
CY2020	us-gaap	Gain Loss On Investments GainLossOnInvestments	79000	USD
CY2019	us-gaap	Gain Loss On Investments GainLossOnInvestments	22000	USD
CY2018	us-gaap	Gain Loss On Investments GainLossOnInvestments	-3000	USD
CY2020	us-gaap	Debt And Equity Securities Unrealized Gain Loss DebtAndEquitySecuritiesUnrealizedGainLoss	-59000	USD
CY2019	us-gaap	Debt And Equity Securities Unrealized Gain Loss DebtAndEquitySecuritiesUnrealizedGainLoss	194000	USD
CY2018	us-gaap	Debt And Equity Securities Unrealized Gain Loss DebtAndEquitySecuritiesUnrealizedGainLoss	-61000	USD
CY2019	us-gaap	Other Income OtherIncome	1460000	USD
CY2018	us-gaap	Other Income OtherIncome	1337000	USD
CY2020	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	20000000	USD
CY2019	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	27000000	USD
CY2018	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	2144000	USD
CY2020	shak	Availableforsale Securities Amortized Cost Basis Securities Sold AvailableforsaleSecuritiesAmortizedCostBasisSecuritiesSold	19921000	USD
CY2019	shak	Availableforsale Securities Amortized Cost Basis Securities Sold AvailableforsaleSecuritiesAmortizedCostBasisSecuritiesSold	26978000	USD
CY2018	shak	Availableforsale Securities Amortized Cost Basis Securities Sold AvailableforsaleSecuritiesAmortizedCostBasisSecuritiesSold	2160000	USD
CY2020	us-gaap	Available For Sale Securities Gross Realized Gains AvailableForSaleSecuritiesGrossRealizedGains	79000	USD
CY2019	us-gaap	Available For Sale Securities Gross Realized Gains AvailableForSaleSecuritiesGrossRealizedGains	36000	USD
CY2018	us-gaap	Available For Sale Securities Gross Realized Gains AvailableForSaleSecuritiesGrossRealizedGains	2000	USD
CY2020	us-gaap	Available For Sale Securities Gross Realized Losses AvailableForSaleSecuritiesGrossRealizedLosses	0	USD
CY2019	us-gaap	Available For Sale Securities Gross Realized Losses AvailableForSaleSecuritiesGrossRealizedLosses	14000	USD
CY2018	us-gaap	Available For Sale Securities Gross Realized Losses AvailableForSaleSecuritiesGrossRealizedLosses	18000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	0	USD
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	0	USD
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	-16000	USD
CY2020	us-gaap	Asset Impairment Charges AssetImpairmentCharges	7644000	USD
CY2018	us-gaap	Asset Impairment Charges AssetImpairmentCharges	0	USD
CY2019	us-gaap	Asset Impairment Charges AssetImpairmentCharges	0	USD
CY2020Q4	shak	Franchise Receivable FranchiseReceivable	2675000	USD
CY2019Q4	shak	Franchise Receivable FranchiseReceivable	4510000	USD
CY2020Q4	us-gaap	Credit Card Receivables CreditCardReceivables	2989000	USD
CY2019Q4	us-gaap	Credit Card Receivables CreditCardReceivables	3417000	USD
CY2020Q4	shak	Delivery Receivables DeliveryReceivables	2229000	USD
CY2019Q4	shak	Delivery Receivables DeliveryReceivables	722000	USD
CY2020Q4	us-gaap	Other Receivables OtherReceivables	1599000	USD
CY2019Q4	us-gaap	Other Receivables OtherReceivables	1321000	USD
CY2020Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	28000	USD
CY2019Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	0	USD
CY2020Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	9464000	USD
CY2019Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	9970000	USD
CY2020Q4	us-gaap	Inventory Net InventoryNet	2888000	USD
CY2019Q4	us-gaap	Inventory Net InventoryNet	2221000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	502697000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	436648000	USD
CY2020Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	166156000	USD
CY2019Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	121786000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	336541000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	314862000	USD
CY2020	us-gaap	Depreciation Depreciation	48801000	USD
CY2019	us-gaap	Depreciation Depreciation	40392000	USD
CY2018	us-gaap	Depreciation Depreciation	29000000	USD
CY2020Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	5409000	USD
CY2020Q4	us-gaap	Sales And Excise Tax Payable Current SalesAndExciseTaxPayableCurrent	4285000	USD
CY2019Q4	us-gaap	Sales And Excise Tax Payable Current SalesAndExciseTaxPayableCurrent	4086000	USD
CY2020Q4	shak	Tax Receivable Agreement Liability Current TaxReceivableAgreementLiabilityCurrent	0	USD
CY2019Q4	shak	Tax Receivable Agreement Liability Current TaxReceivableAgreementLiabilityCurrent	7777000	USD
CY2020Q4	shak	Contract With Customer Gift Card Liability ContractWithCustomerGiftCardLiability	2637000	USD
CY2019Q4	shak	Contract With Customer Gift Card Liability ContractWithCustomerGiftCardLiability	2258000	USD
CY2020Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	1998000	USD
CY2019Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	1873000	USD
CY2020Q4	us-gaap	Other Sundry Liabilities Current OtherSundryLiabilitiesCurrent	5280000	USD
CY2019Q4	us-gaap	Other Sundry Liabilities Current OtherSundryLiabilitiesCurrent	3505000	USD
CY2020Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	14200000	USD
CY2019Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	19499000	USD
CY2020Q4	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	12151000	USD
CY2019Q4	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	11310000	USD
CY2020Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	3586000	USD
CY2019Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	3643000	USD
CY2020Q4	us-gaap	Other Sundry Liabilities Noncurrent OtherSundryLiabilitiesNoncurrent	8723000	USD
CY2019Q4	us-gaap	Other Sundry Liabilities Noncurrent OtherSundryLiabilitiesNoncurrent	375000	USD
CY2020Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	24460000	USD
CY2019Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	15328000	USD
CY2020Q4	shak	Other Liabilities Noncurrent Deferred Lease Incentive OtherLiabilitiesNoncurrentDeferredLeaseIncentive	3182	USD
CY2020Q4	shak	Other Liabilities Noncurrent Deferred Social Security Taxes OtherLiabilitiesNoncurrentDeferredSocialSecurityTaxes	5214	USD
CY2020Q4	us-gaap	Line Of Credit Facility Fair Value Of Amount Outstanding LineOfCreditFacilityFairValueOfAmountOutstanding	0	USD
CY2020	us-gaap	Interest Costs Incurred InterestCostsIncurred	815000	USD
CY2019	us-gaap	Interest Costs Incurred InterestCostsIncurred	434000	USD
CY2018	us-gaap	Interest Costs Incurred InterestCostsIncurred	2572000	USD
CY2018	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	157000	USD
CY2020	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	0	USD
CY2020	shak	Lessee Operating Lease Number Of Renewal Options LesseeOperatingLeaseNumberOfRenewalOptions	2	option
CY2020Q4	shak	Operating And Finance Lease Right Of Use Asset OperatingAndFinanceLeaseRightOfUseAsset	311726000	USD
CY2019Q4	shak	Operating And Finance Lease Right Of Use Asset OperatingAndFinanceLeaseRightOfUseAsset	279870000	USD
CY2020Q4	shak	Othercurrentliabilitiesfinanceleases Othercurrentliabilitiesfinanceleases	1998000	USD
CY2019Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	5444000	USD
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	306317000	USD
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	274426000	USD
CY2019Q4	shak	Othercurrentliabilitiesfinanceleases Othercurrentliabilitiesfinanceleases	1873000	USD
CY2020Q4	shak	Otherlongtermliabilitiesfinanceleases Otherlongtermliabilitiesfinanceleases	3586000	USD
CY2019Q4	shak	Otherlongtermliabilitiesfinanceleases Otherlongtermliabilitiesfinanceleases	3643000	USD
CY2020Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	35657000	USD
CY2019Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	30002000	USD
CY2020Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	343736000	USD
CY2019Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	304914000	USD
CY2020Q4	shak	Operating And Finance Lease Liability OperatingAndFinanceLeaseLiability	384977000	USD
CY2019Q4	shak	Operating And Finance Lease Liability OperatingAndFinanceLeaseLiability	340432000	USD
CY2020	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	2257000	USD
CY2019	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	1998000	USD
CY2020	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	213000	USD
CY2019	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	193000	USD
CY2020	us-gaap	Operating Lease Cost OperatingLeaseCost	44910000	USD
CY2019	us-gaap	Operating Lease Cost OperatingLeaseCost	40068000	USD
CY2020	us-gaap	Short Term Lease Cost ShortTermLeaseCost	494000	USD
CY2019	us-gaap	Short Term Lease Cost ShortTermLeaseCost	394000	USD
CY2020	us-gaap	Variable Lease Cost VariableLeaseCost	13766000	USD
CY2019	us-gaap	Variable Lease Cost VariableLeaseCost	16060000	USD
CY2020	us-gaap	Lease Cost LeaseCost	61640000	USD
CY2019	us-gaap	Lease Cost LeaseCost	58713000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	496307000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	53114000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due Year Three FinanceLeaseLiabilityPaymentsDueYearThree	1078000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due Next Twelve Months FinanceLeaseLiabilityPaymentsDueNextTwelveMonths	2169000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	45961000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due Year Two FinanceLeaseLiabilityPaymentsDueYearTwo	1633000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	55055000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due Year Four FinanceLeaseLiabilityPaymentsDueYearFour	584000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	54404000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due Year Five FinanceLeaseLiabilityPaymentsDueYearFive	347000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	53042000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due After Year Five FinanceLeaseLiabilityPaymentsDueAfterYearFive	172000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	234731000	USD
CY2020Q4	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	5983000	USD
CY2019	us-gaap	Operating Lease Payments OperatingLeasePayments	37468000	USD
CY2019Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P5Y1M6D
CY2020Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P9Y8M12D
CY2020Q4	us-gaap	Finance Lease Liability Undiscounted Excess Amount FinanceLeaseLiabilityUndiscountedExcessAmount	399000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	116914000	USD
CY2020Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	5584000	USD
CY2020Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	379393000	USD
CY2020Q4	shak	Operating Lease For Non Cancellable Leases OperatingLeaseForNonCancellableLeases	36788000	USD
CY2020Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P5Y2M12D
CY2019Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P10Y1M6D
CY2020Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.036
CY2019Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.037
CY2020Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.042
CY2019Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.054
CY2020	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	213000	USD
CY2019	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	193000	USD
CY2020	us-gaap	Operating Lease Payments OperatingLeasePayments	42144000	USD
CY2019	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	65556000	USD
CY2020	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	2206000	USD
CY2019	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	1926000	USD
CY2020	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	2298000	USD
CY2019	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	2831000	USD
CY2020	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	59969000	USD
CY2020	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	895000	USD
CY2019	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	772000	USD
CY2018	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	509000	USD
CY2019Q3	shak	Effectof Gramercy Tavern Merger Shares Conversionof Unit EffectofGramercyTavernMergerSharesConversionofUnit	2690263	shares
CY2019Q3	shak	Effectof Gramercy Tavern Merger Shares Conversionof Unit EffectofGramercyTavernMergerSharesConversionofUnit	2690263	shares
CY2020Q4	shak	Consolidation Lessthan Wholly Owned Subsidiary Numberof Shares Heldby Parent ConsolidationLessthanWhollyOwnedSubsidiaryNumberofSharesHeldbyParent	38717790	shares
CY2019Q4	shak	Consolidation Lessthan Wholly Owned Subsidiary Numberof Shares Heldby Parent ConsolidationLessthanWhollyOwnedSubsidiaryNumberofSharesHeldbyParent	34417302	shares
CY2020Q4	shak	Consolidation Lessthan Wholly Owned Subsidiary Numberof Shares Heldby Noncontrolling Owners ConsolidationLessthanWhollyOwnedSubsidiaryNumberofSharesHeldbyNoncontrollingOwners	2951188	shares
CY2019Q4	shak	Consolidation Lessthan Wholly Owned Subsidiary Numberof Shares Heldby Noncontrolling Owners ConsolidationLessthanWhollyOwnedSubsidiaryNumberofSharesHeldbyNoncontrollingOwners	3145197	shares
CY2020Q4	shak	Consolidation Lessthan Wholly Owned Subsidiary Numberof Shares ConsolidationLessthanWhollyOwnedSubsidiaryNumberofShares	41668978	shares
CY2020Q4	shak	Noncontrolling Interest Total Ownership Percentage NoncontrollingInterestTotalOwnershipPercentage	1.000
CY2019Q4	shak	Consolidation Lessthan Wholly Owned Subsidiary Numberof Shares ConsolidationLessthanWhollyOwnedSubsidiaryNumberofShares	37562499	shares
CY2019Q4	shak	Noncontrolling Interest Total Ownership Percentage NoncontrollingInterestTotalOwnershipPercentage	1.000
CY2020	shak	Noncontrolling Interest Weighted Average Ownership Percentage NoncontrollingInterestWeightedAverageOwnershipPercentage	0.077
CY2019	shak	Noncontrolling Interest Weighted Average Ownership Percentage NoncontrollingInterestWeightedAverageOwnershipPercentage	0.159
CY2020	us-gaap	Net Income Loss NetIncomeLoss	-42158000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	19827000	USD
CY2020	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	5560000	USD
CY2019	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	7505000	USD
CY2019	shak	Consolidated Entity Ownership By Parent Number Of Units Acquired ConsolidatedEntityOwnershipByParentNumberOfUnitsAcquired	4412150	shares
CY2019	shak	Effectof Gramercy Tavern Merger Shares Conversionof Unit EffectofGramercyTavernMergerSharesConversionofUnit	2690263	shares
CY2018	us-gaap	Net Income Loss NetIncomeLoss	15179000	USD
CY2020	us-gaap	Consolidation Less Than Wholly Owned Subsidiary Parent Ownership Interest Change Due To Net Income Attributable To Parent And Effects Of Changes Net ConsolidationLessThanWhollyOwnedSubsidiaryParentOwnershipInterestChangeDueToNetIncomeAttributableToParentAndEffectsOfChangesNet	101193000	USD
CY2019	us-gaap	Consolidation Less Than Wholly Owned Subsidiary Parent Ownership Interest Change Due To Net Income Attributable To Parent And Effects Of Changes Net ConsolidationLessThanWhollyOwnedSubsidiaryParentOwnershipInterestChangeDueToNetIncomeAttributableToParentAndEffectsOfChangesNet	55498000	USD
CY2018	us-gaap	Consolidation Less Than Wholly Owned Subsidiary Parent Ownership Interest Change Due To Net Income Attributable To Parent And Effects Of Changes Net ConsolidationLessThanWhollyOwnedSubsidiaryParentOwnershipInterestChangeDueToNetIncomeAttributableToParentAndEffectsOfChangesNet	32900000	USD
CY2019	shak	Consolidated Entity Ownership By Parent Number Of Units Acquired ConsolidatedEntityOwnershipByParentNumberOfUnitsAcquired	4412150	shares
CY2020	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	5560000	USD
CY2019	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	7505000	USD
CY2018	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	6143000	USD
CY2020	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	204000	USD
CY2019	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	188000	USD
CY2018	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	172000	USD
CY2018	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	6143000	USD
CY2020	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	40000	USD
CY2019	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	195000	USD
CY2018	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	107000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-59873000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	11797000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	21595000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	14396000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	15717000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	9215000	USD
CY2020	shak	Tax Cutsand Jobs Actof2017 Incomplete Accounting Changein Tax Rate Deferred Tax Liability Provisional Income Tax Expense Benefit Other Rate Changes TaxCutsandJobsActof2017IncompleteAccountingChangeinTaxRateDeferredTaxLiabilityProvisionalIncomeTaxExpenseBenefitOtherRateChanges	-5433000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	-45477000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	27514000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	30810000	USD
CY2020	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	0	USD
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	2984000	USD
CY2018	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	5281000	USD
CY2020	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	190000	USD
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	4283000	USD
CY2018	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	858000	USD
CY2020	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	1223000	USD
CY2019	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	2183000	USD
CY2018	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	1935000	USD
CY2020	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	1413000	USD
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	9450000	USD
CY2018	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	8074000	USD
CY2020	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-12638000	USD
CY2019	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-5643000	USD
CY2018	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-210000	USD
CY2020	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	11282000	USD
CY2019	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-421000	USD
CY2018	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	998000	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-1356000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-6064000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	788000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	57000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	3386000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	8862000	USD
CY2020	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	-9550000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	-0.034
CY2019	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	3007000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	0.109
CY2020	shak	Tax Cutsand Jobs Actof2017 Incomplete Accounting Changein Tax Rate Deferred Tax Liability Provisional Income Tax Expense Benefit Other Rate Changes Percent TaxCutsandJobsActof2017IncompleteAccountingChangeinTaxRateDeferredTaxLiabilityProvisionalIncomeTaxExpenseBenefitOtherRateChangesPercent	0.119
CY2019	shak	Tax Cutsand Jobs Actof2017 Incomplete Accounting Changein Tax Rate Deferred Tax Liability Provisional Income Tax Expense Benefit Other Rate Changes TaxCutsandJobsActof2017IncompleteAccountingChangeinTaxRateDeferredTaxLiabilityProvisionalIncomeTaxExpenseBenefitOtherRateChanges	-208000	USD
CY2019	shak	Tax Cutsand Jobs Actof2017 Incomplete Accounting Changein Tax Rate Deferred Tax Liability Provisional Income Tax Expense Benefit Other Rate Changes Percent TaxCutsandJobsActof2017IncompleteAccountingChangeinTaxRateDeferredTaxLiabilityProvisionalIncomeTaxExpenseBenefitOtherRateChangesPercent	-0.008
CY2018	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	2151000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	0.070
CY2020	us-gaap	Income Tax Reconciliation Minority Interest Income Expense IncomeTaxReconciliationMinorityInterestIncomeExpense	-537000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Minority Interest Income Expense EffectiveIncomeTaxRateReconciliationMinorityInterestIncomeExpense	0.012
CY2019	us-gaap	Income Tax Reconciliation Minority Interest Income Expense IncomeTaxReconciliationMinorityInterestIncomeExpense	1405000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Minority Interest Income Expense EffectiveIncomeTaxRateReconciliationMinorityInterestIncomeExpense	0.051
CY2018	us-gaap	Income Tax Reconciliation Minority Interest Income Expense IncomeTaxReconciliationMinorityInterestIncomeExpense	1908000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Minority Interest Income Expense EffectiveIncomeTaxRateReconciliationMinorityInterestIncomeExpense	0.062
CY2020	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	5776000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	-0.127
CY2019	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	5778000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2018	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	6470000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2019	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	3924000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.142
CY2018	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	797000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.026
CY2020	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	1223000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.027
CY2019	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	2183000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	0.079
CY2018	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	1935000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	0.063
CY2020	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	1533000	USD
CY2018	shak	Tax Cutsand Jobs Actof2017 Incomplete Accounting Changein Tax Rate Deferred Tax Liability Provisional Income Tax Expense Benefit Other Rate Changes TaxCutsandJobsActof2017IncompleteAccountingChangeinTaxRateDeferredTaxLiabilityProvisionalIncomeTaxExpenseBenefitOtherRateChanges	-3794000	USD
CY2018	shak	Tax Cutsand Jobs Actof2017 Incomplete Accounting Changein Tax Rate Deferred Tax Liability Provisional Income Tax Expense Benefit Other Rate Changes Percent TaxCutsandJobsActof2017IncompleteAccountingChangeinTaxRateDeferredTaxLiabilityProvisionalIncomeTaxExpenseBenefitOtherRateChangesPercent	-0.123
CY2020	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-2264000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.050
CY2019	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-4669000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.170
CY2018	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	0	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0
CY2020	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	435000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.010
CY2019	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	374000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.014
CY2018	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-75000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.002
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	57000	USD
CY2020	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	-0.001
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	3386000	USD
CY2019	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.123
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	8862000	USD
CY2020Q4	us-gaap	Operating Loss Carryforwards OperatingLossCarryforwards	75522000	USD
CY2019Q4	us-gaap	Operating Loss Carryforwards OperatingLossCarryforwards	26058000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	9610000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	8419000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	398000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	292814000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	285309000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	2656000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Deferred Income DeferredTaxAssetsDeferredIncome	141000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Deferred Income DeferredTaxAssetsDeferredIncome	199000	USD
CY2018	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.288
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	331000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	347000	USD
CY2018	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.288
CY2020	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	-0.001
CY2019	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.123
CY2020Q4	shak	Deferred Tax Asset Investmentin Partnership DeferredTaxAssetInvestmentinPartnership	139379000	USD
CY2019Q4	shak	Deferred Tax Asset Investmentin Partnership DeferredTaxAssetInvestmentinPartnership	179363000	USD
CY2020Q4	shak	Deferred Tax Assets Tax Receivable Agreement DeferredTaxAssetsTaxReceivableAgreement	63853000	USD
CY2019Q4	shak	Deferred Tax Assets Tax Receivable Agreement DeferredTaxAssetsTaxReceivableAgreement	65679000	USD
CY2020Q4	shak	Deferred Tax Assets Operating Lease DeferredTaxAssetsOperatingLease	3470000	USD
CY2019Q4	shak	Deferred Tax Assets Operating Lease DeferredTaxAssetsOperatingLease	4768000	USD
CY2020Q4	shak	Deferred Tax Asset Finance Lease DeferredTaxAssetFinanceLease	51000	USD
CY2019Q4	shak	Deferred Tax Asset Finance Lease DeferredTaxAssetFinanceLease	78000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	457000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	954000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	290158000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	284355000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	300000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	585000	USD
CY2020Q4	shak	Deferred Tax Liabilities Rightofuseasset Operating Lease DeferredTaxLiabilitiesRightofuseassetOperatingLease	2802000	USD
CY2019Q4	shak	Deferred Tax Liabilities Rightofuseasset Operating Lease DeferredTaxLiabilitiesRightofuseassetOperatingLease	3876000	USD
CY2020Q4	shak	Deferred Tax Liabilities Rightofuseasset Finance Lease DeferredTaxLiabilitiesRightofuseassetFinanceLease	49000	USD
CY2019Q4	shak	Deferred Tax Liabilities Rightofuseasset Finance Lease DeferredTaxLiabilitiesRightofuseassetFinanceLease	77000	USD
CY2020Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	3151000	USD
CY2019Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	4538000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	287007000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	279817000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Domestic DeferredTaxAssetsOperatingLossCarryforwardsDomestic	313940000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards State And Local DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal	183829000	USD
CY2020	shak	Additional Deferred Tax Asset Recognized Investmentin Partnership AdditionalDeferredTaxAssetRecognizedInvestmentinPartnership	8609000	USD
CY2020	shak	Additional Deferred Tax Asset Recognized Tax Receivable Agreement AdditionalDeferredTaxAssetRecognizedTaxReceivableAgreement	1106000	USD
CY2020	shak	Other Incomerelatedtoadditionaltaxbasison Tra OtherIncomerelatedtoadditionaltaxbasisonTRA	1147000	USD
CY2020Q4	shak	Deferred Tax Asset Valuation Allowance Other DeferredTaxAssetValuationAllowanceOther	2579000	USD
CY2020	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	-1625000	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	0	USD
CY2020Q4	shak	Tax Receivable Agreement Percentageof Tax Benefits Dueto Equity Owners TaxReceivableAgreementPercentageofTaxBenefitsDuetoEquityOwners	0.85
CY2020Q4	shak	Tax Receivable Agreement Percentageof Tax Benefits Dueto Equity Owners Remaining TaxReceivableAgreementPercentageofTaxBenefitsDuetoEquityOwnersRemaining	0.15
CY2020	shak	Consolidated Entity Ownership By Parent Llc Units Acquired ConsolidatedEntityOwnershipByParentLLCUnitsAcquired	194009	shares
CY2020Q4	shak	Tax Receivable Agreement Percentageof Tax Benefits Dueto Equity Owners TaxReceivableAgreementPercentageofTaxBenefitsDuetoEquityOwners	0.85
CY2020Q4	shak	Tax Receivable Agreement Liability Currentand Noncurrent TaxReceivableAgreementLiabilityCurrentandNoncurrent	232954000	USD
CY2020Q4	shak	Tax Receivable Agreement Liability Current TaxReceivableAgreementLiabilityCurrent	0	USD
CY2020	shak	Accelerated Tax Depreciation Deductions Related To Assets Placed In Service AcceleratedTaxDepreciationDeductionsRelatedToAssetsPlacedInService	351	USD
CY2020	us-gaap	Profit Loss ProfitLoss	-45534000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	24128000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	21948000	USD
CY2020	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-3376000	USD
CY2019	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	4301000	USD
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.63
CY2018	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	6769000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	-42158000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	19827000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	15179000	USD
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	37129000	shares
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	31381000	shares
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	28299000	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	37129000	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	32251000	shares
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	29179000	shares
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-1.14
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.54
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-1.14
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.61
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.52
CY2019	shak	Establishmentof Liabilities Under Tax Receivable Agreement EstablishmentofLiabilitiesUnderTaxReceivableAgreement	32065000	USD
CY2020	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	1612000	USD
CY2019	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	3044000	USD
CY2018	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	3272000	USD
CY2020	shak	Interest Paid Net Of Amounts Capitalized InterestPaidNetOfAmountsCapitalized	643000	USD
CY2019	shak	Interest Paid Net Of Amounts Capitalized InterestPaidNetOfAmountsCapitalized	255000	USD
CY2018	shak	Interest Paid Net Of Amounts Capitalized InterestPaidNetOfAmountsCapitalized	2261000	USD
CY2020	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	15515000	USD
CY2019	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	12620000	USD
CY2018	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	17443000	USD
CY2020	shak	Noncash Deemed Landlord Financing NoncashDeemedLandlordFinancing	0	USD
CY2019	shak	Noncash Deemed Landlord Financing NoncashDeemedLandlordFinancing	0	USD
CY2018	shak	Noncash Deemed Landlord Financing NoncashDeemedLandlordFinancing	5443000	USD
CY2020	shak	Sharebased Payment Arrangement Amount Capitalizedinto Other Assets SharebasedPaymentArrangementAmountCapitalizedintoOtherAssets	37000	USD
CY2019	shak	Sharebased Payment Arrangement Amount Capitalizedinto Other Assets SharebasedPaymentArrangementAmountCapitalizedintoOtherAssets	101000	USD
CY2018	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	107000	USD
CY2020	shak	Establishmentof Liabilities Under Tax Receivable Agreement EstablishmentofLiabilitiesUnderTaxReceivableAgreement	4024000	USD
CY2018	shak	Establishmentof Liabilities Under Tax Receivable Agreement EstablishmentofLiabilitiesUnderTaxReceivableAgreement	44338000	USD
CY2020Q4	shak	Tax Receivable Agreement Liability Currentand Noncurrent TaxReceivableAgreementLiabilityCurrentandNoncurrent	232954000	USD
CY2020	shak	Tax Receivable Agreement Payments To Related Parties TaxReceivableAgreementPaymentsToRelatedParties	6643000	USD
CY2019	shak	Tax Receivable Agreement Payments To Related Parties TaxReceivableAgreementPaymentsToRelatedParties	707000	USD
CY2020Q3	shak	Tax Receivable Agreement Payments To Related Parties TaxReceivableAgreementPaymentsToRelatedParties	0	USD
CY2020Q4	shak	Tax Receivable Agreement Liability Currentand Noncurrent TaxReceivableAgreementLiabilityCurrentandNoncurrent	232954000	USD
CY2019Q4	shak	Tax Receivable Agreement Liability Currentand Noncurrent TaxReceivableAgreementLiabilityCurrentandNoncurrent	234426000	USD
CY2020	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	478000	USD
CY2019	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	1708000	USD
CY2018	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	751000	USD
CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	522867000	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	594519000	USD
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	459310000	USD
CY2020Q1	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	143170000	USD
CY2020Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	91786000	USD
CY2020Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	130401000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	157510000	USD
CY2020Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	-787000	USD
CY2020Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	-24075000	USD
CY2020Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	-6798000	USD
	us-gaap	Operating Income Loss OperatingIncomeLoss	-12216000	USD
CY2020Q1	us-gaap	Profit Loss ProfitLoss	-1079000	USD
CY2020Q2	us-gaap	Profit Loss ProfitLoss	-18031000	USD
CY2020Q3	us-gaap	Profit Loss ProfitLoss	-6110000	USD
	us-gaap	Profit Loss ProfitLoss	-20314000	USD
CY2020Q1	us-gaap	Net Income Loss NetIncomeLoss	-960000	USD
CY2020Q2	us-gaap	Net Income Loss NetIncomeLoss	-16211000	USD
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	-5559000	USD
	us-gaap	Net Income Loss NetIncomeLoss	-19428000	USD
CY2020Q1	us-gaap	Basic Earnings Per Share Pro Forma BasicEarningsPerShareProForma	-0.03
CY2020Q2	us-gaap	Basic Earnings Per Share Pro Forma BasicEarningsPerShareProForma	-0.43
CY2020Q3	us-gaap	Basic Earnings Per Share Pro Forma BasicEarningsPerShareProForma	-0.15
	us-gaap	Basic Earnings Per Share Pro Forma BasicEarningsPerShareProForma	-0.50
CY2020Q1	us-gaap	Diluted Earnings Per Share Pro Forma DilutedEarningsPerShareProForma	-0.03
CY2020Q2	us-gaap	Diluted Earnings Per Share Pro Forma DilutedEarningsPerShareProForma	-0.43
CY2020Q3	us-gaap	Diluted Earnings Per Share Pro Forma DilutedEarningsPerShareProForma	-0.15
	us-gaap	Diluted Earnings Per Share Pro Forma DilutedEarningsPerShareProForma	-0.50
CY2019Q1	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	132609000	USD
CY2019Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	152713000	USD
CY2019Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	157762000	USD
CY2019Q4	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	151435000	USD
CY2019Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	5162000	USD
CY2019Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	11871000	USD
CY2019Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	8164000	USD
CY2019Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	488000	USD
CY2019Q1	us-gaap	Profit Loss ProfitLoss	3607000	USD
CY2019Q2	us-gaap	Profit Loss ProfitLoss	11171000	USD
CY2019Q3	us-gaap	Profit Loss ProfitLoss	11423000	USD
CY2019Q4	us-gaap	Profit Loss ProfitLoss	-2073000	USD
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	2546000	USD
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	9030000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	10344000	USD
CY2019Q4	us-gaap	Net Income Loss NetIncomeLoss	-2093000	USD
CY2019Q1	us-gaap	Basic Earnings Per Share Pro Forma BasicEarningsPerShareProForma	0.09
CY2019Q2	us-gaap	Basic Earnings Per Share Pro Forma BasicEarningsPerShareProForma	0.30
CY2019Q3	us-gaap	Basic Earnings Per Share Pro Forma BasicEarningsPerShareProForma	0.32
CY2019Q4	us-gaap	Basic Earnings Per Share Pro Forma BasicEarningsPerShareProForma	-0.06
CY2019Q1	us-gaap	Diluted Earnings Per Share Pro Forma DilutedEarningsPerShareProForma	0.08
CY2019Q2	us-gaap	Diluted Earnings Per Share Pro Forma DilutedEarningsPerShareProForma	0.29
CY2019Q3	us-gaap	Diluted Earnings Per Share Pro Forma DilutedEarningsPerShareProForma	0.31
CY2019Q4	us-gaap	Diluted Earnings Per Share Pro Forma DilutedEarningsPerShareProForma	-0.06
CY2020	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	0	USD

Files In Submission

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$SHAK
Shake Shack Inc. Stock $shak

2019 Q4 Form 10-K Financial Statement

#000162053321000027 Filed on February 26, 2021

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$SHAK Shake Shack Inc. Stock $shak

2019 Q4 Form 10-K Financial Statement

#000162053321000027 Filed on February 26, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$SHAK
Shake Shack Inc. Stock $shak