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           Subsequent Events (Details Textual) (9.75% Senior Secured Notes due 2015 [Member]) 
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           Aug. 31, 2009 
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           Jul. 25, 2012
 
          Repayment of Debt [Member] 
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| Subsequent Event [Line Items] | ||
| Interest rate on instrument | 9.75% | 9.75% | 
| Repurchase price equal to principal amount plus accrued interest | 104.875% | 
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- Definition 
          Debt Instrument, Repurchace Price Principal Amount Plus Accrued Interest No definition available. 
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- Definition 
          Interest rate stated in the contractual debt agreement. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Details 
          
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