REVENUE RECOGNITION - Loyalty Programs (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Hotel
Disaggregation of Revenue [Line Items]
Goods and services provided without charge	$ 1,162	$ 5,376	$ 5,748	$ 8,934
Food and beverage
Disaggregation of Revenue [Line Items]
Goods and services provided without charge	1,074	7,758	8,907	13,548
Other
Disaggregation of Revenue [Line Items]
Goods and services provided without charge	32	1,783	1,806	3,161
Loyalty Programs
Disaggregation of Revenue [Line Items]
Goods and services provided without charge	$ 2,268	$ 14,917	$ 16,461	$ 25,643