Accounts Payable and Accrued Expenses (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Payables and Accruals [Abstract]
Accrued capital expenditures	$ 64,175	$ 90,910
Accounts payable and accrued expenses	25,627	35,084
Interest rate swap agreements liability	11,629	13,330
Accrued interest payable	2,804	3,699
Due to affiliated companies	757	763
Total accounts payable and accrued expenses	$ 104,992	$ 143,786