Supplemental Consolidating Guarantor and Non-Guarantor Financial Information - Additional Information (Detail) (10.875% Senior Notes [Member])
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Dec. 31, 2012
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Jun. 30, 2012
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Mar. 16, 2011
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10.875% Senior Notes [Member]
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Debt Instrument [Line Items] | |||
Interest rate on senior note | 10.875% | 10.875% | 10.875% |