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Estimated Cost of Providing Promotional Allowances (Details) - Gaming expenses [Member] - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Promotional Allowances [Line Items]        
Estimated Cost of Promotional Allowances $ 3,644 $ 3,414 $ 7,249 $ 6,700
Food and Beverage [Member]        
Promotional Allowances [Line Items]        
Estimated Cost of Promotional Allowances 3,423 3,089 6,781 6,103
Rooms [Member]        
Promotional Allowances [Line Items]        
Estimated Cost of Promotional Allowances 188 190 352 381
Other [Member]        
Promotional Allowances [Line Items]        
Estimated Cost of Promotional Allowances $ 33 $ 135 $ 116 $ 216