Investment in Eldorado Financial Information (Details) (Eldorado, USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Eldorado
Schedule of Equity Method Investments [Line Items]
Net operating revenues	$ 65,129	$ 65,644	$ 128,864	$ 127,383
Operating income	7,214	7,906	13,813	12,329
Net income (loss)	3,320	4,544	5,849	3,891
Net (income) loss attributable to non-controlling interest	0	(14)	0	61
Net loss attributable to Eldorado	$ 3,320	$ 4,530	$ 5,849	$ 3,952