REVENUE RECOGNITION - Promotional Allowances (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Food and beverage
Promotional Allowances
Estimated departmental costs of providing promotional allowances	$ 26,025	$ 25,743
Hotel
Promotional Allowances
Estimated departmental costs of providing promotional allowances	3,375	3,039
Other costs
Promotional Allowances
Estimated departmental costs of providing promotional allowances	2,128	1,943
Promotional allowances
Promotional Allowances
Estimated departmental costs of providing promotional allowances	$ 31,528	$ 30,725