Write-downs, reserves and recoveries, net (Details) (USD $)	3 Months Ended		6 Months Ended			1 Months Ended	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2012 US Army Corp of Engineers	Jan. 31, 2012 Federated Sports and Gaming	Jun. 30, 2013 Slot and Other Equipment	Jun. 30, 2012 Slot and Other Equipment	Jun. 30, 2013 Slot and Other Equipment	Jun. 30, 2012 Slot and Other Equipment
Write-downs, Reserves and Recoveries, Net
Loss (gain) on disposal of assets					$ 2,500,000		$ 800,000	$ 800,000	$ 1,100,000	$ (1,200,000)
Reserve on uncollectable loan receivable	0	0	0	(2,000,000)		(2,000,000)
Gain on collection of loan receivables	0	0	(200,000)	0
Impairment of assets		0	1,300,000	0
Write-downs, reserves and recoveries, net	$ 1,927,000	$ 788,000	$ 2,241,000	$ 796,000