REVENUE FROM CONTRACTS WITH CUSTOMERS - Disaggregation by Booking Source (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Disaggregation of Revenue [Line Items]
Total room and other hotel revenues	$ 266,301	$ 277,669
Room revenues
Disaggregation of Revenue [Line Items]
Total room and other hotel revenues	254,464	267,046
Other Hotel Revenues
Disaggregation of Revenue [Line Items]
Total room and other hotel revenues	6,800	5,300
Property direct | Room revenues
Disaggregation of Revenue [Line Items]
Total room and other hotel revenues	60,024	69,829
Property direct | Room revenues | Restatement Adjustment
Disaggregation of Revenue [Line Items]
Total room and other hotel revenues		(3,700)
Central call center | Room revenues
Disaggregation of Revenue [Line Items]
Total room and other hotel revenues	77,191	68,108
Central call center | Room revenues | Restatement Adjustment
Disaggregation of Revenue [Line Items]
Total room and other hotel revenues		2,600
Proprietary website | Room revenues
Disaggregation of Revenue [Line Items]
Total room and other hotel revenues	52,939	50,398
Proprietary website | Room revenues | Restatement Adjustment
Disaggregation of Revenue [Line Items]
Total room and other hotel revenues		1,100
Third-party intermediaries | Room revenues
Disaggregation of Revenue [Line Items]
Total room and other hotel revenues	57,820	69,097
Travel agency global distribution systems | Room revenues
Disaggregation of Revenue [Line Items]
Total room and other hotel revenues	$ 6,490	$ 9,614