Investments in Unconsolidated Joint Ventures - Summary of Investments and Income from Investments In Unconsolidated Joint Ventures (Parenthetical) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Schedule Of Equity Method Investments [Line Items]
Distributions of earnings from unconsolidated joint ventures	$ 7,278	$ 3,999	$ 4,067
Contribution to the joint venture	11,750	60	368,852
Loss from unconsolidated joint ventures	24,896	18,619	4,706
712 Fifth Avenue [Member]
Schedule Of Equity Method Investments [Line Items]
Distributions made in excess of share of earnings recognized negative basis	14,329	22,345
Distributions of earnings from unconsolidated joint ventures	1,485
Contribution to the joint venture	11,750
Loss from unconsolidated joint ventures	10,265	(687)	(1,849)
Income (Loss) of investment accounted under equity method accounting	(4,498)
Proportionate share of income (loss) of equity method investment not recognized	(2,249)
55 Second Street [Member]
Schedule Of Equity Method Investments [Line Items]
Loss from unconsolidated joint ventures	2,912	2,723	826
Difference between carrying amount of investment and equity	478
60 Wall Street [Member]
Schedule Of Equity Method Investments [Line Items]
Loss from unconsolidated joint ventures	(66)	70	551
Difference between carrying amount of investment and equity	2,617
One Steuart Lane [Member]
Schedule Of Equity Method Investments [Line Items]
Loss from unconsolidated joint ventures	(2,678)	2,043	118
Difference between carrying amount of investment and equity	751
Oder-Center, Germany [Member]
Schedule Of Equity Method Investments [Line Items]
Loss from unconsolidated joint ventures	(43)	$ (17)	$ (78)
Difference between carrying amount of investment and equity	$ 4,658