Management Agreements and Leases - IHG Agreement (Details) $ in Thousands		3 Months Ended
	Feb. 22, 2019 USD ($) hotel	Mar. 31, 2019 USD ($) hotel	Mar. 31, 2018 USD ($)	Dec. 31, 2018 USD ($)
Management Agreements and Leases [Line Items]
Security deposit balance		$ 116,448		$ 132,816
Capital improvements from leased facilities, funded		11,738	$ 26,483
Hotel
Management Agreements and Leases [Line Items]
Amount by which the cash flow available to pay the entity's minimum rent or return was more than the minimum amount		$ 0	1,275
Hotel | Maximum
Management Agreements and Leases [Line Items]
Number of real estate properties leased or managed | hotel	101	101
Hotel | IHG Agreement
Management Agreements and Leases [Line Items]
Operating agreement annual rent and return		$ 205,011
Realized returns and rents		49,584	47,315
Security deposit balance required to be maintained with entity		37,000
Amount by which the cash flow available to pay the entity's minimum rent or return was more than the minimum amount		100,000
Replenishment (utilization) of security deposit		14,255
Security deposit balance		85,745
Capital improvements from leased facilities, funded		$ 0	$ 0
Hotel | IHG Agreement | Maximum | Hotel Palomar, Washington, DC
Management Agreements and Leases [Line Items]
Supplement provided on existing security deposit	$ 5,000