Goodwill and Indefinite-lived Intangible Assets - Goodwill (Details) (USD $)	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012 Boomtown New Orleans	Dec. 31, 2012 River Downs	Jan. 31, 2011 River Downs	Dec. 31, 2012 Heartland Poker Tour
Goodwill [Line Items]
Goodwill Acquired					$ 35,800,000	$ 2,600,000
Original Value	55,200,000		16,800,000	35,800,000		2,600,000
Accumulated impairment charges	0		0	0		0
Net book value	$ 55,157,000	$ 52,562,000	$ 16,800,000	$ 35,800,000		$ 2,600,000