Lease Obligations (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Operating Leased Assets
Rent expense	$ 11.3	$ 9.9	$ 11.9
Slot and table game participation expenses	19.1	19.6	22.2
Balterra Casino Resort
Operating Leased Assets
Term of lease agreement	50 years
Operating Leases, Initial Lease Term	5 years
Number of renewal options	9
Renewal period	5 years
Remaining renewal periods	7
Minimum rental expense	1.4
Percentage of gross gaming wins in lease agreement	1.50%
Excess amount of minimum annual rental payments	100
Option to purchase property	30
L'Auberge Lake Charles
Operating Leased Assets
Rent expense	1.0
Number of renewal options	6
Area Committed to Lease	232
River City Casino
Operating Leased Assets
Term of lease agreement	99 years
Future annual minimum rent amount	4.0
Future annual minimum rent, percentage of annual adjusted gross receipts	2.50%
Corporate Office Space
Operating Leased Assets
Rent expense	1.4
Term of lease agreement	10 years
Number of renewal options	1
Renewal period	60 months
Abandoned Office Space
Operating Leased Assets
Rent expense	$ 0.6
L'Auberge Lake Charles
Operating Leased Assets
Term of lease agreement	10 years
Renewal period	10 years
Corporate Office Space 2
Operating Leased Assets
Area Committed to Lease	9,900
Corporate Office Space
Operating Leased Assets
Area Committed to Lease	41,000
River City
Operating Leased Assets
Area Committed to Lease	56
Balterra Casino Resort
Operating Leased Assets
Area Committed to Lease	148
Total Area in Lease	315