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Income Taxes - Reconciliation of Unrecognized Tax Benefits (Detail) (USD $)
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12 Months Ended | ||
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Dec. 31, 2014
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Dec. 31, 2013
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Dec. 31, 2012
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| Income Tax Disclosure [Abstract] | |||
| Unrecognized tax benefits at beginning of year | $ 1,254,000us-gaap_UnrecognizedTaxBenefits | $ 1,254,000us-gaap_UnrecognizedTaxBenefits | $ 1,281,000us-gaap_UnrecognizedTaxBenefits |
| Gross increases for tax positions of prior years | 676,000us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions | 14,000us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions | |
| Gross decreases for tax positions of prior years | (165,000)us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions | ||
| Lapse of statute of limitations | (41,000)us-gaap_UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations | ||
| Unrecognized tax benefits at end of year | $ 1,765,000us-gaap_UnrecognizedTaxBenefits | $ 1,254,000us-gaap_UnrecognizedTaxBenefits | $ 1,254,000us-gaap_UnrecognizedTaxBenefits |
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- Details
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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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- Definition
Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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