Annual report pursuant to Section 13 and 15(d)

BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Schedule of Retail Value and Estimated Cost of Providing Room, Food and Beverage and Other Incentives (Details)

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BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Schedule of Retail Value and Estimated Cost of Providing Room, Food and Beverage and Other Incentives (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]    
Food and beverage $ 12,528 $ 9,804
Rooms 1,084 969
Other incentives 1,923 1,561
Promotional allowances 29,006 27,420
Retail Value of Promotional Allowances    
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]    
Food and beverage 20,602 18,872
Rooms 7,177 7,090
Other incentives 1,227 1,458
Promotional allowances 29,006 27,420
Costs of Providing Promotional Allowances    
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]    
Food and beverage 20,462 17,324
Rooms 4,584 4,426
Other incentives 855 975
Promotional allowances $ 25,901 $ 22,725