Corporate Indebtedness - Schedule of Consolidated Interest Expense, Excluding Capitalized Interest (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Interest expense
Interest expense before capitalized interest	$ 38,501	$ 44,937	$ 78,369	$ 101,751
Interest on financing leases	1,494	2,149	2,986	3,812
Interest capitalized	(20,671)	(16,368)	(38,254)	(36,852)
Interest income	(364)	(648)	(753)	(1,147)
Interest expense, net	$ 18,960	$ 30,070	$ 42,348	$ 67,564