Investments in Unconsolidated Real Estate Ventures - Summary of Debt (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Schedule of Equity Method Investments
Variable rate, weighted average interest rate	2.34%
Variable rate	$ 773,872	$ 629,479
Fixed rate, weighted average interest rate	3.79%
Fixed rate	$ 444,775	561,236
Unconsolidated real estate ventures - mortgages payable	1,218,647	1,190,715
Unamortized deferred financing costs	(7,437)	(2,859)
Unconsolidated real estate ventures - mortgages payable, net	1,211,210	$ 1,187,856
The Marriott Wardman Park hotel
Schedule of Equity Method Investments
Unconsolidated real estate ventures - mortgages payable, net	$ 129,000