Summary of Significant Accounting Policies (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Revenue recognition
Promotional allowances	$ 37,691,000	$ 43,169,000	$ 74,622,000	$ 87,755,000
Cost of complimentary services	22,483,000	25,623,000	45,395,000	52,485,000
Gaming and Racing Taxes
Gaming expense	223,200,000	267,000,000	442,600,000	549,000,000
Rooms [Member]
Revenue recognition
Promotional allowances	8,426,000	8,993,000	16,497,000	18,312,000
Cost of complimentary services	2,530,000	3,121,000	5,240,000	6,360,000
Food And Beverage [Member]
Revenue recognition
Promotional allowances	26,794,000	31,232,000	53,392,000	63,722,000
Cost of complimentary services	18,482,000	21,119,000	37,354,000	43,098,000
Other Services [Member]
Revenue recognition
Promotional allowances	2,471,000	2,944,000	4,733,000	5,721,000
Cost of complimentary services	$ 1,471,000	$ 1,383,000	$ 2,801,000	$ 3,027,000