Summary of Significant Accounting Policies - Pre-opening and Development Costs (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Pre-opening and Development Costs [Line Items]
Pre-opening and development costs	$ 8,817	$ 13,649	$ 16,608
Baton Rouge [Member]
Pre-opening and Development Costs [Line Items]
Pre-opening and development costs	4,300	1,200	5,800
Sugarcane Bay [Member]
Pre-opening and Development Costs [Line Items]
Pre-opening and development costs	300	1,500	2,000
River City [Member]
Pre-opening and Development Costs [Line Items]
Pre-opening and development costs	200	9,900	8,000
Other [Member]
Pre-opening and Development Costs [Line Items]
Pre-opening and development costs	$ 4,000	$ 1,000	$ 800