Taxes on Income - Deferred Income Taxes (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Income Tax Disclosure [Abstract]
Provision for vacation pay	$ 682	$ 553
Accrued severance pay	3,365	3,513
Carryforward tax losses	63,276	66,120
Research and development costs	5,438	5,415
Taxes on undistributed income of Israeli subsidiary	(2,406)	(2,236)
Intangible assets	(4,160)	(5,777)
Other	2,851	3,267
Total - Gross	69,046	70,855
Less - valuation allowance	48,228	51,595	26,068	21,744
Total - Net	$ 20,818	$ 19,260

Deferred Tax Assets Liabilities Net Before Valuation Allowance

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Deferred Tax Assets Liabilities Valuation Allowance Amount

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Deferred Tax Assets Vacation Provision

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from in-process research and development costs expensed in connection with a business combination.

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Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards, net of deferred tax liability attributable to taxable temporary differences.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences not separately disclosed.

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The tax effect as of the balance sheet date of the amount of future tax deductions arising from all unused tax credit carryforwards which have been reduced by a valuation allowance.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from severance costs.

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Amount of deferred tax liability attributable to taxable temporary differences from intangible assets other than goodwill.

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Amount of deferred tax liability attributable to taxable temporary differences from undistributed earnings of subsidiaries and other recognized entities not within the country of domicile of the entity.

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