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Favorable Lease Assets - Narrative (Details) $ in Thousands	3 Months Ended	12 Months Ended
	Jun. 30, 2015 USD ($)	Dec. 31, 2017 USD ($) room	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Sep. 30, 2017 USD ($)	Feb. 28, 2017 USD ($)
Indefinite-lived Intangible Assets by Major Class [Line Items]
Amortization of intangible assets		$ 400	$ 300	$ 500
Amortization in 2018		400
Amortization in 2019		400
Amortization in 2020		400
Amortization in 2021		400
Amortization in 2022		400
Write off of assets		3,209	0	10,461
Off-Market Favorable Lease
Indefinite-lived Intangible Assets by Major Class [Line Items]
Accumulated amortization		$ 2,700	$ 2,300
Off-Market Favorable Lease | Orchards Inn Sedona Annex Sublease
Indefinite-lived Intangible Assets by Major Class [Line Items]
Carrying amount of the lease right					$ 9,100	$ 9,100
Above Market Lease Rights | Westin Boston Waterfront Hotel Ground Lease
Indefinite-lived Intangible Assets by Major Class [Line Items]
Impairment of favorable lease asset	$ 9,600
Above Market Lease Rights | Lexington Hotel New York Tenant Leases
Indefinite-lived Intangible Assets by Major Class [Line Items]
Impairment of favorable lease asset				$ 800
Prepaid Expenses and Other Current Assets | Above Market Lease Rights | Westin Boston Waterfront Hotel Ground Lease
Indefinite-lived Intangible Assets by Major Class [Line Items]
Write off of assets	$ 600
Minimum | Above Market Lease Rights | Westin Boston Waterfront Hotel Ground Lease
Indefinite-lived Intangible Assets by Major Class [Line Items]
Number of room hotel for development for which favorable lease assets are owned | room		320
Maximum | Above Market Lease Rights | Westin Boston Waterfront Hotel Ground Lease
Indefinite-lived Intangible Assets by Major Class [Line Items]
Number of room hotel for development for which favorable lease assets are owned | room		350

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Number of Room Hotel For Development For Which Favorable Lease Assets Are Owned

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The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of an intangible asset (excluding goodwill) to fair value.

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