Income Taxes - Income Tax Provision (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Current:
Federal	$ 3,458us-gaap_CurrentFederalTaxExpenseBenefit	$ 5,535us-gaap_CurrentFederalTaxExpenseBenefit	$ 2,550us-gaap_CurrentFederalTaxExpenseBenefit
State	210	139	184
Foreign	122us-gaap_CurrentForeignTaxExpenseBenefit	28us-gaap_CurrentForeignTaxExpenseBenefit	(61)us-gaap_CurrentForeignTaxExpenseBenefit
Total current income tax expense	3,790us-gaap_CurrentIncomeTaxExpenseBenefit	5,702us-gaap_CurrentIncomeTaxExpenseBenefit	2,673us-gaap_CurrentIncomeTaxExpenseBenefit
Deferred:
Federal	(4,678)	(488)	2,142
State	54	133	360
Foreign	101	622	175
Reversal of valuation allowance	(33)	(156)	(132)
Deferred income tax expense benefit	(4,556)us-gaap_DeferredIncomeTaxExpenseBenefit	111us-gaap_DeferredIncomeTaxExpenseBenefit	2,545us-gaap_DeferredIncomeTaxExpenseBenefit
Total provision (benefit) for taxes on income	$ (766)us-gaap_IncomeTaxExpenseBenefit	$ 5,813us-gaap_IncomeTaxExpenseBenefit	$ 5,218us-gaap_IncomeTaxExpenseBenefit

The amount of valuation allowance reversed which reduces the income tax provision.

No definition available.

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Amount of current federal tax expense (benefit) pertaining to income (loss) from continuing operations.

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Amount of current foreign income tax expense (benefit) pertaining to income (loss) from continuing operations.

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Amount of current income tax expense (benefit) pertaining to taxable income (loss) from continuing operations.

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Amount of current state and local tax expense (benefit) pertaining to income (loss) from continuing operations.

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Amount of deferred federal income tax expense (benefit) pertaining to income (loss) from continuing operations.

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Amount of deferred foreign income tax expense (benefit) pertaining to income (loss) from continuing operations.

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Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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