Summary of Significant Accounting Policies - Schedule Operating Partnership's VIEs (Details) - Operating Partnership's VIEs - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Property, net
Variable Interest Entity [Line Items]
Assets	$ 263,511	$ 288,881
Other assets
Variable Interest Entity [Line Items]
Assets	23,001	60,586
Total assets
Variable Interest Entity [Line Items]
Assets	286,512	349,467
Mortgage notes payable
Variable Interest Entity [Line Items]
Liabilities	125,273	129,436
Other liabilities
Variable Interest Entity [Line Items]
Liabilities	32,503	72,705
Total liabilities
Variable Interest Entity [Line Items]
Liabilities	$ 157,776	$ 202,141