Interest Payable, Accounts Payable and Deferred Revenue (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Accounts Payable and Accrued Liabilities [Abstract]
Interest payable	$ 11,732	$ 11,707
Accounts payable and accrued liabilities	79,731	66,437
Deferred revenue	48,144	53,266
Total interest payable, accounts payable and deferred revenue	$ 139,607	$ 131,410