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Commitments and Contingencies - Narrative (Details) $ in Thousands			12 Months Ended
		Feb. 28, 2017 room	Dec. 31, 2018 USD ($) ft² hotel renewal_term ground_lease	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Real Estate Properties [Line Items]
Restricted cash | $	[1]		$ 47,735	$ 40,204	$ 46,069
Number of properties subject to ground leases (in hotels) | hotel			7
Ground rent expense | $			$ 11,600	10,200	12,700
Cash paid for ground rent | $			$ 4,700	$ 4,100	$ 7,000
Bethesda Marriott Suites
Real Estate Properties [Line Items]
Number of renewal periods (in ones)			0
Courtyard Manhattan / Fifth Avenue
Real Estate Properties [Line Items]
Number of renewal periods (in ones)			1
Ground leases renewal option (in years)			49 years
Salt Lake City Marriott Downtown mortgage loan
Real Estate Properties [Line Items]
Number of properties subject to ground leases (in hotels) | ground_lease			2
Interest in land under hotel (as a percent of ownership)			21.00%
Boston Westin mortgage loan
Real Estate Properties [Line Items]
Number of renewal periods (in ones)			0
Cavallo Point
Real Estate Properties [Line Items]
Number of renewal periods (in ones)			0
Renaissance Worthington
Real Estate Properties [Line Items]
Number of properties subject to ground leases (in hotels) | ground_lease			3
Number of renewal periods (in ones)			3
Ground leases renewal option (in years)			15 years
Percentage of land on which the parking garage is constructed			25.00%
JW Marriott Denver at Cherry Creek
Real Estate Properties [Line Items]
Number of renewal periods (in ones)			2
Ground leases renewal option (in years)			5 years
Area of real estate property | ft²			5,500
Incremental renewal option (in years)			1 year
First Set of Renewal Options | Shorebreak Hotel
Real Estate Properties [Line Items]
Number of renewal periods (in ones)			2
Ground leases renewal option (in years)			25 years
First Set of Renewal Options | Hotel Palomar Phoenix
Real Estate Properties [Line Items]
Number of renewal periods (in ones)			3
Ground leases renewal option (in years)			5 years
Second Set of Renewal Options | Shorebreak Hotel
Real Estate Properties [Line Items]
Number of renewal periods (in ones)			1
Ground leases renewal option (in years)			24 years
Orchards Inn Sedona
Real Estate Properties [Line Items]
Number of rooms | room		28
Number of rooms acquired (in rooms) | room		70
Long-Term Ground Lease | Shorebreak Hotel
Real Estate Properties [Line Items]
Ownership of undivided interest (as a percent of ownership)			95.50%
Land Underlying the Hotel and Lease | Shorebreak Hotel
Real Estate Properties [Line Items]
Interest in land under hotel (as a percent of ownership)			4.50%
[1] Restricted cash primarily consists of reserves for replacement of furniture and fixtures held by our hotel managers and cash held in escrow pursuant to lender requirements.

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