Summary of Significant Accounting Policies (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Revenue recognition
Promotional allowances	$ 37,782,000	$ 43,714,000	$ 112,404,000	$ 131,469,000
Cost of complimentary services	15,056,000	17,480,000	45,385,000	53,292,000
Gaming and Racing Taxes
Gaming expense	221,500,000	251,200,000	664,100,000	800,200,000
Rooms
Revenue recognition
Promotional allowances	8,955,000	9,639,000	25,452,000	27,951,000
Cost of complimentary services	2,737,000	2,946,000	7,949,000	8,741,000
Food and Beverage
Revenue recognition
Promotional allowances	26,228,000	31,327,000	79,620,000	95,049,000
Cost of complimentary services	10,999,000	13,138,000	33,561,000	40,066,000
Other
Revenue recognition
Promotional allowances	2,599,000	2,748,000	7,332,000	8,469,000
Cost of complimentary services	$ 1,320,000	$ 1,396,000	$ 3,875,000	$ 4,485,000