Income Taxes - Income Tax Expense (Benefit) (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013
Current taxes:
Federal current taxes	$ (106)us-gaap_CurrentFederalTaxExpenseBenefit
State and local current taxes	8	(14)
Foreign current taxes	212us-gaap_CurrentForeignTaxExpenseBenefit	52us-gaap_CurrentForeignTaxExpenseBenefit
Total current taxes	114us-gaap_CurrentIncomeTaxExpenseBenefit	38us-gaap_CurrentIncomeTaxExpenseBenefit
Deferred taxes:
Federal deferred taxes		2,181
Foreign deferred taxes	(76)	(25)
Total deferred taxes	(76)us-gaap_DeferredIncomeTaxExpenseBenefit	2,156us-gaap_DeferredIncomeTaxExpenseBenefit
Total Income tax expense	$ 38us-gaap_IncomeTaxExpenseBenefit	$ 2,194us-gaap_IncomeTaxExpenseBenefit

Amount of current federal 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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