Interest and Debt Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Interest and Debt Expense [Abstract]
Interest expense	$ 63,545	$ 76,605	$ 130,180	$ 194,252
Capitalized interest and debt expense	(9,446)	(19,812)	(21,501)	(43,137)
Amortization of deferred financing costs	4,306	6,236	8,568	14,377
Interest and debt expense, Total	$ 58,405	$ 63,029	$ 117,247	$ 165,492