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           Repurchased and Redemptions of Terminated Nine and Five-Eighths Percent Notes (Detail) (Terminated 9 5/8% Senior Secured Second Lien Notes due 2016, USD $) 
        In Thousands, unless otherwise specified  | 
        
           Jun. 03, 2013 
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           Mar. 14, 2013 
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           Dec. 12, 2012 
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           Jun. 01, 2012 
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           Dec. 12, 2011 
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           Sep. 06, 2011 
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           Jun. 01, 2011 
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           Dec. 01, 2010 
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           Jun. 01, 2010 
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|---|---|---|---|---|---|---|---|---|---|
| 
           Terminated 9 5/8% Senior Secured Second Lien Notes due 2016 
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| Debt Instrument [Line Items] | |||||||||
| Principal Redeemed/Repurchased | $ 903 | $ 212,597 | $ 4,000 | $ 17,500 | $ 12,500 | $ 5,000 | $ 17,500 | $ 12,500 | $ 17,500 | 
| Premium Paid | 27 | 22,650 | 120 | 525 | 375 | 144 | 525 | 375 | 525 | 
| Unamortized Discount | 3 | 837 | 17 | 80 | 62 | 26 | 93 | 70 | 105 | 
| Bond Issue Costs | $ 2,867 | $ 57 | $ 287 | $ 337 | $ 135 | $ 472 | $ 334 | $ 417 | 
| X | ||||||||||
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- Definition 
          Debt Instrument, Issuance Costs No definition available. 
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- Definition 
          Debt Instrument, Premium Paid No definition available. 
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- Definition 
          Debt Instrument, Principal Amount, Repurchased Or Redeemed No definition available. 
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- Details 
          
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- Definition 
          The amount of debt discount that was originally recognized at the issuance of the instrument that has yet to be amortized. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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