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Summary of Unrecognized Tax Benefits (Detail) (USD $)
In Thousands, unless otherwise specified |
Dec. 31, 2014
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Dec. 31, 2013
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| Income Tax Disclosure [Abstract] | ||
| Beginning balance | $ 568us-gaap_UnrecognizedTaxBenefits | $ 568us-gaap_UnrecognizedTaxBenefits |
| Ending balance | $ 568us-gaap_UnrecognizedTaxBenefits | $ 568us-gaap_UnrecognizedTaxBenefits |
| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
Amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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