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Subsequent Event (Details) (Subsequent Event, USD $)
In Millions, unless otherwise specified
0 Months Ended
Mar. 13, 2013
Mar. 13, 2013
Maximum
Mar. 12, 2013
Maximum
Mar. 13, 2013
Senior Secured Notes
Minimum
Jan. 15, 2013
Senior Secured Notes
Minimum
Subsequent Event [Line Items]          
DIP facility, interim amount     $ 15    
DIP facility, aggregate amount   $ 25 $ 25    
DIP facility, interest rate 9.25%        
DIP facility, interest rate increase in the event of default 2.00%        
Holders of aggregate principal amount       70.00% 70.00%