Goodwill and Indefinite-lived Intangible Assets - Intangibles (Details) (USD $)			12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010 Gaming Licenses	Dec. 31, 2012 Gaming Licenses	Dec. 31, 2012 Boomtown Bossier City Gaming Licenses	Dec. 31, 2012 L'Auberge Baton Rouge Gaming Licenses	Dec. 31, 2012 Retama Partners Gaming Licenses	Dec. 31, 2012 Heartland Poker Tour Gaming Licenses
Indefinite-lived Intangible Assets [Line Items]
Fully impaired gaming license			$ 11,500,000
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Original value				40,900,000	15,700,000	23,900,000	1,100,000	200,000
Accumulated impairment charges				(21,100,000)	(5,700,000)	(15,400,000)	0	0
Net book value at December 31, 2012	$ 20,833,000	$ 18,516,000		$ 19,800,000	$ 10,000,000	$ 8,500,000	$ 1,100,000	$ 200,000