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Fair Value of Senior Notes (Detail) $ in Thousands	Sep. 30, 2015 USD ($)
Series 2005A Tranche B [Member]
Fair Value Of Financial Instruments [Line Items]
Fair Value of Senior Notes	$ 57,272
Series 2005A Tranche C [Member]
Fair Value Of Financial Instruments [Line Items]
Fair Value of Senior Notes	59,941
Series 2007A Tranche B [Member]
Fair Value Of Financial Instruments [Line Items]
Fair Value of Senior Notes	8,281
Series 2007A Tranche C [Member]
Fair Value Of Financial Instruments [Line Items]
Fair Value of Senior Notes	25,505
Series 2007A Tranche D [Member]
Fair Value Of Financial Instruments [Line Items]
Fair Value of Senior Notes	$ 40,153

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- Definition

Fair value of financial instruments.

+ References

No definition available.

+ Details

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- Definition

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

+ References

No definition available.

+ Details

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- Details

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