STOCK-BASED COMPENSATION - Reported Stock-based Compensation Expense (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Stock-based compensation expense
Total stock-based compensation, before taxes	$ 3,855	$ 4,125	$ 3,131
Tax benefit	(810)	(866)	(657)
Total stock-based compensation, net of tax	3,045	3,259	2,474
Casino
Stock-based compensation expense
Total stock-based compensation, before taxes	168	205	129
Food and beverage
Stock-based compensation expense
Total stock-based compensation, before taxes	(26)	211	137
Hotel
Stock-based compensation expense
Total stock-based compensation, before taxes	127	109	66
Selling, general and administrative
Stock-based compensation expense
Total stock-based compensation, before taxes	$ 3,586	$ 3,600	$ 2,799

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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