Accounts Payable and Accrued Expenses (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Payables and Accruals [Abstract]
Accrued capital expenditures	$ 58,057	$ 90,910
Accounts payable and accrued expenses	32,309	35,084
Interest rate swap agreements liability	8,849	13,330
Accrued interest payable	3,219	3,699
Due to affiliated companies	769	763
Total accounts payable and accrued expenses	$ 103,203	$ 143,786