Native American Development - North Fork (Details) (USD $)				9 Months Ended
	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2013 Federated Indians of Graton Rancheria (FIGR) [Member] Slot_Machines	Sep. 30, 2013 North Fork Rancheria of Mono Indians (Mono) [Member]	Sep. 30, 2013 North Fork Rancheria of Mono Indians (Mono) [Member] Maximum [Member] gaming_device	Sep. 30, 2013 North Fork Rancheria of Mono Indians (Mono) [Member] Minimum [Member]	Sep. 30, 2013 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							305
Number of slot machines			3,000		2,000
Estimated period to begin construction					36 months	24 months
Estimated period after construction begins, facility is completed and open for business				18 months
Reimbursable advances for Native American Development			$ 62,200,000	$ 21,100,000
Native American development costs	$ 6,013,000	$ 3,255,000		$ 6,000,000
Successful project completion (percentage)					75.00%	65.00%