Interest and Debt Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Interest and Debt Expense [Abstract]
Interest expense	$ 58,259	$ 63,545	$ 113,910	$ 130,180
Capitalized interest and debt expense	(10,779)	(9,446)	(21,046)	(21,501)
Amortization of deferred financing costs	4,414	4,306	9,094	8,568
Interest and debt expense, Total	$ 51,894	$ 58,405	$ 101,958	$ 117,247