Long-Term Debt (Schedule of Boyd Bank Credit Facility) (Details) (Bank Credit Facility, Parent, USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Line of Credit Facility [Line Items]
Amount outstanding	$ 1,439,263	$ 1,621,715
Extended Revolving Facility
Line of Credit Facility [Line Items]
Amount outstanding	620,000	807,000
Initial Term Loan
Line of Credit Facility [Line Items]
Amount outstanding	462,500	475,000
Incremental Term Loan
Line of Credit Facility [Line Items]
Amount outstanding	331,713	338,965
Swing Loan
Line of Credit Facility [Line Items]
Amount outstanding	$ 25,050	$ 750