v2.4.0.6
Long-Term Debt (Peninsula Bank Credit Facility Narrative) (Details) (USD $)
Mar. 31, 2013
Dec. 31, 2012
Parent | Bank Credit Facility
   
Debt Instrument [Line Items]    
Interest rate at period end 4.20%  
Amount outstanding, gross $ 1,450,000,000  
Amount outstanding 1,437,695,000 1,466,635,000
Remaining borrowing capacity 278,398,000  
Parent | Letter of Credit
   
Debt Instrument [Line Items]    
Amount outstanding 8,500,000  
Subsidiary, Peninsula Gaming [Member] | Bank Credit Facility
   
Debt Instrument [Line Items]    
Interest rate at period end 5.70%  
Amount outstanding, gross 843,700,000  
Remaining borrowing capacity 23,400,000  
Subsidiary, Peninsula Gaming [Member] | Letter of Credit
   
Debt Instrument [Line Items]    
Amount outstanding $ 5,800,000