Revenue From Contracts With Customers - Disaggregation by Booking Source (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disaggregation of Revenue [Line Items]
Revenues	$ 1,275,059	$ 1,282,725	$ 1,270,593
Room revenues
Disaggregation of Revenue [Line Items]
Revenues	1,237,311	$ 1,260,868	$ 1,250,865
Other Hotel Revenues
Disaggregation of Revenue [Line Items]
Revenues	21,900
Property direct | Room revenues
Disaggregation of Revenue [Line Items]
Revenues	360,718
Central call center | Room revenues
Disaggregation of Revenue [Line Items]
Revenues	303,336
Proprietary website | Room revenues
Disaggregation of Revenue [Line Items]
Revenues	220,734
Third-party intermediaries | Room revenues
Disaggregation of Revenue [Line Items]
Revenues	300,965
Travel agency global distribution systems | Room revenues
Disaggregation of Revenue [Line Items]
Revenues	$ 51,558