Basis of Presentation and Significant Accounting Policies (Income Taxes) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Tax Contingency [Line Items]
Deferred tax assets, net	$ 7,557	$ 7,944
Deferred tax liabilities	74,721	54,597
Income tax expense (benefit)	$ 29,222	$ 21,660	$ (10,496)
Effective income tax reconciliation, percent	(47.00%)	6.00%	5.30%
Estimated taxable income net	$ 102,903	$ 398,644	$ 413,026
Net basis difference of assets and liabilities between tax basis and GAAP basis	1,500,000
The Farley Building
Income Tax Contingency [Line Items]
Income tax expense (benefit)	11,722	13,665	10,868
Taxable Reit Subsidiaries
Income Tax Contingency [Line Items]
Income tax expense (benefit)			27,910
220 Central Park South
Income Tax Contingency [Line Items]
Income tax expense (benefit)		$ 6,016	$ 5,711
Federal Tax Authority
Income Tax Contingency [Line Items]
Net operating loss carryforwards	162,000
Net operating loss carryforwards, valuation allowance	144,000
State and Local Jurisdiction
Income Tax Contingency [Line Items]
Net operating loss carryforwards	259,000
Net operating loss carryforwards, valuation allowance	$ 242,000
Ordinary Income
Income Tax Contingency [Line Items]
Percentage of taxable income distributed	100.00%	100.00%	84.20%
Qualified Dividend
Income Tax Contingency [Line Items]
Percentage of taxable income distributed			15.80%