Management Agreements and Leases - Hyatt Agreement (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2017 USD ($) hotel property	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)
Property Subject to or Available for Operating Lease [Line Items]
Number of properties owned | property	522
Hotels
Property Subject to or Available for Operating Lease [Line Items]
Number of properties owned | hotel	323
Hotels | Hyatt Hotels Corporation
Property Subject to or Available for Operating Lease [Line Items]
Number of properties owned | hotel	22
Operating agreement annual rent and return	$ 22,037
Realized returns and rents	22,037	$ 22,037	$ 22,037
Guarantee provided to the entity, maximum	50,000
Increase in guarantee	2,797
Guarantee provided to the entity, remaining amount	$ 21,106