Investment in Mesquite (Details) (Mesquite, USD $)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Mesquite
Schedule of Equity Method Investments [Line Items]
Net operating revenues	$ 26,998	$ 28,463
Operating income (loss)	4,296	3,116
Net income	$ 2,831	$ 1,632