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Long-Term Debt (Parenthetical) (Detail) (9 5/8% senior secured second lien notes)
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6 Months Ended | 12 Months Ended |
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Jun. 30, 2012
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Dec. 31, 2011
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9 5/8% senior secured second lien notes
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| Debt Instrument [Line Items] | ||
| Debt, interest rate | 9.625% | 9.625% |
| Debt, maturity year | 2016 | 2016 |
| X | ||||||||||
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- Definition
Debt Instrument Maturity Year No definition available.
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| X | ||||||||||
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- Definition
The average effective interest rate during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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