Corporate Indebtedness - Schedule of Consolidated Interest Expense, Excluding Capitalized Interest (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Interest expense
Interest expense before capitalized interest	$ 34,054	$ 42,595	$ 112,423	$ 144,345
Interest on financing leases	1,229	2,198	4,215	6,010
Interest capitalized	(20,141)	(20,677)	(58,395)	(57,528)
Interest income	(335)	(580)	(1,088)	(1,727)
Interest expense, net	$ 14,807	$ 23,536	$ 57,155	$ 91,100