Interest portion of the estimated loss amount resulting from adverse tax portion.

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Qualified Improvement Property, Benefit (Expense), Reclassification Of Losses

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Estimated amount of loss resulting from an adverse tax position.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.

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Income Taxes (Details) - USD ($)					3 Months Ended
Income Taxes (Details) - USD ($)	Dec. 27, 2019	Jan. 18, 2019	May 02, 2018	Nov. 30, 2017	Mar. 31, 2020	Mar. 31, 2019	Mar. 27, 2020
Income Tax Contingency [Line Items]
(Benefit) provision for corporate income taxes					$ (8,598,000)	$ 74,000
Effective income tax rate					6.00%	(3.00%)
Benefit for reclassifying QIP							$ 8,652,000
Unrecognized tax benefits					$ 1,155,000
Tax Year 2006 Though 2009 \| New York State Division of Taxation and Finance
Income Tax Contingency [Line Items]
Proposed tax assessment				$ 5,097
Interest portion of the proposed tax assessment				$ 2,419
Tax Year 2006 Though 2009 \| New York City Department Of Finance
Income Tax Contingency [Line Items]
Proposed tax assessment		$ 5,599	$ 8,935,000
Interest portion of the proposed tax assessment		$ 1,569	$ 4,138,000
Tax Year 2010 Though 2014 \| New York State Division of Taxation and Finance
Income Tax Contingency [Line Items]
Proposed tax assessment	$ 2,749,000
Interest portion of the proposed tax assessment	$ 840,000