Accounts Payable and Accrued Expenses (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Payables and Accruals [Abstract]
Accrued capital expenditures	$ 77,142	$ 85,242
Accounts payable and accrued expenses	34,328	34,585
Interest rate swap agreements liability	28,850	5,243
Accrued interest payable	2,851	4,990
Due to affiliated companies	30	616
Total accounts payable and accrued expenses	$ 143,201	$ 130,676