Fair Value - Additional Information (Detail) - USD ($) $ in Thousands |
Sep. 30, 2015 |
Dec. 31, 2014 |
|---|---|---|
| Fair Value Disclosures [Abstract] | ||
| Notes outstanding, carrying value | $ 400,000 | $ 400,000 |
| Notes outstanding, fair value | $ 384,000 | $ 388,000 |
| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Including the current and noncurrent portions, aggregate carrying amount of all types of notes payable, as of the balance sheet date, with initial maturities beyond one year or beyond the normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Fair value portion of notes payable. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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