Summary of Significant Accounting Policies (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2020 USD ($) joint_venture	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Accounting Policies [Abstract]
Real estate interests, number of joint ventures | joint_venture	2
Equity method investment, ownership percentage	50.00%
Summary of Significant Accounting Policies
Amortization of deferred financing costs	$ 200	$ 100	$ 200
Interest Expense	31,200	31,900	$ 37,900
Operating Lease, Liability		$ 48,200
Lessor, Operating Lease, Reimbursement Of Rent	500
Lessor, Operating Lease, Total Rent Abatement	$ 52,700
Land Improvements [Member]
Summary of Significant Accounting Policies
Property, Plant and Equipment, Useful Life	15 years
Building Improvements [Member]
Summary of Significant Accounting Policies
Property, Plant and Equipment, Useful Life	15 years
Building [Member]
Summary of Significant Accounting Policies
Property, Plant and Equipment, Useful Life	40 years
Minimum | Furniture and Fixtures [Member]
Summary of Significant Accounting Policies
Property, Plant and Equipment, Useful Life	3 years
Maximum | Furniture and Fixtures [Member]
Summary of Significant Accounting Policies
Property, Plant and Equipment, Useful Life	5 years
Unconsolidated Properties
Accounting Policies [Abstract]
Equity method investment, ownership percentage	50.00%		50.00%
The Knickerbocker New York [Member]
Summary of Significant Accounting Policies
Real Estate Properties Ownership Percentage	5.00%