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Debtor in Possession Financial Information (Details Textual) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Debtor in Possession Financial Information (Textual) [Abstract]        
Contractual interest expense $ 20,277 $ 28,645 $ 44,439 $ 57,221