Summary of Significant Accounting Policies (Details) (USD $) In Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Revenue recognition
Promotional allowances	$ 33,422	$ 33,643	$ 64,116	$ 68,319
Cost of complimentary services	22,095	23,062	43,082	46,269
Rooms
Revenue recognition
Promotional allowances	5,528	5,990	10,739	11,960
Cost of complimentary services	2,010	2,319	4,024	4,603
Food and beverage
Revenue recognition
Promotional allowances	25,461	24,931	48,689	51,035
Cost of complimentary services	18,645	19,001	36,264	38,195
Other
Revenue recognition
Promotional allowances	2,433	2,722	4,688	5,324
Cost of complimentary services	$ 1,440	$ 1,742	$ 2,794	$ 3,471