Investment in Mesquite (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Schedule of Equity Method Investments [Line Items]
Operating income	$ 5,214	$ 6,816	$ 21,002	$ 20,629
Net Income (loss)	1,306	1,973	9,204	7,822
Mesquite
Schedule of Equity Method Investments [Line Items]
Net operating revenues	19,231	20,056	70,775	74,553
Operating income	(2,539)	(2,293)	4,160	976
Net Income (loss)	$ (4,640)	$ (3,795)	$ 2,509	$ (3,532)