Taxes on Income Comprised (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Tax Disclosure [Abstract]
Domestic taxes, current	$ 7us-gaap_CurrentFederalTaxExpenseBenefit	$ (37)us-gaap_CurrentFederalTaxExpenseBenefit	$ 727us-gaap_CurrentFederalTaxExpenseBenefit
Domestic taxes, deferred	2,987	(1,127)	(742)
Foreign taxes, current	314us-gaap_CurrentForeignTaxExpenseBenefit	2,016us-gaap_CurrentForeignTaxExpenseBenefit	1,993us-gaap_CurrentForeignTaxExpenseBenefit
Foreign taxes, deferred	(456)	(64)	84
Taxes on income	2,852us-gaap_IncomeTaxExpenseBenefit	788us-gaap_IncomeTaxExpenseBenefit	2,062us-gaap_IncomeTaxExpenseBenefit
Income (loss) before taxes on income, domestic	(2,379)	(4,315)	(1,651)
Income (loss) before taxes on income, foreign	4,412	11,788	17,398
Income before taxes on income	$ 2,033	$ 7,473	$ 15,747

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

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