Native American Development - North Fork (Details) (USD $)			9 Months Ended				9 Months Ended
	Sep. 30, 2012	Dec. 31, 2011	Sep. 30, 2012 North Fork Rancheria of Mono Indians (Mono) [Member] Table_Games	Sep. 30, 2012 North Fork Rancheria of Mono Indians (Mono) [Member] Maximum [Member]	Mar. 27, 2012 North Fork Rancheria of Mono Indians (Mono) [Member] Maximum [Member] Slot_Machines	Sep. 30, 2012 North Fork Rancheria of Mono Indians (Mono) [Member] Minimum [Member]	Sep. 30, 2012 North Fork Rancheria of Mono Indians (Mono) [Member] Net Income [Member]	Sep. 30, 2012 North Fork Rancheria of Mono Indians (Mono) [Member] Other Nonrecurring Expense [Member] Maximum [Member]	Sep. 30, 2012 North Fork Rancheria of Mono Indians (Mono) [Member] Other Nonrecurring Expense [Member] Minimum [Member]	Sep. 30, 2012 North Fork Rancheria of Mono Indians (Mono) [Member] Other Recurring Expense [Member]	Sep. 30, 2012 North Fork Rancheria of Mono Indians (Mono) [Member] Land Held for Development [Member] acre
Development and Management Agreements, Native American [Line Items]
Area of land for project											305
Number of slot machines					2,000
Number of table games			60
Mitigation contributions								$ 28,200,000	$ 13,200,000	$ 5,100,000
Native American development costs	2,896,000	70,516,000	18,000,000
Description of variable interest rate basis related to Native American development costs			prime rate
Basis spread on variable interest rate related to Native American development costs			1.50%
Development agreement commitments			$ 1,300,000
Management agreement, term			7 years
Project management fee (percentage)							24.00%
Estimated period, after construction begins, facility is completed and open for business			18 months
Successful project completion (percentage)				70.00%		60.00%