Summary of Significant Accounting Policies (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Revenue recognition
Promotional allowances	$ 38,200	$ 37,691	$ 76,088	$ 74,622
Cost of complimentary services	12,504	13,051	25,106	25,728
Gaming and Racing Taxes
Gaming expense	$ 244,500	223,300	$ 471,500	440,000
Failed Spin-Off-Leaseback Financing Obligation
Discount rate	9.70%		9.70%
Period of the Master Lease agreement			35 years
Rooms
Revenue recognition
Promotional allowances	$ 8,903	8,426	$ 17,239	16,497
Cost of complimentary services	974	891	1,909	1,758
Food and Beverage
Revenue recognition
Promotional allowances	27,215	26,790	54,651	53,389
Cost of complimentary services	10,657	11,247	21,486	22,215
Other
Revenue recognition
Promotional allowances	2,082	2,475	4,198	4,736
Cost of complimentary services	$ 873	$ 913	$ 1,711	$ 1,755