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Favorable Lease Assets - Schedule of Favorable Lease Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]
Favorable lease assets, net	$ 63,945	$ 26,690
Cavallo Point Ground Lease | Above Market Leases Ground
Finite-Lived Intangible Assets [Line Items]
Carrying amount of the lease	17,908	0
Hotel Palomar Phoenix Ground Lease | Above Market Leases Ground
Finite-Lived Intangible Assets [Line Items]
Carrying amount of the lease	19,763	0
Boston Westin Waterfront | Above Market Leases Ground
Finite-Lived Intangible Assets [Line Items]
Carrying amount of the lease	17,426	17,643
Orchards Inn Sedona Annex Sublease | Above Market Leases Ground
Finite-Lived Intangible Assets [Line Items]
Carrying amount of the lease	8,757	8,925
Lexington Hotel Tenant Leases | Above Market Leases Ground
Finite-Lived Intangible Assets [Line Items]
Carrying amount of the lease	$ 91	$ 122

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