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Accrued Expenses And Other Current Liabilities (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Payables and Accruals [Abstract]    
Government authorities $ 5,015us-gaap_OtherSundryLiabilitiesCurrent $ 3,603us-gaap_OtherSundryLiabilitiesCurrent
Accrued expenses 1,186us-gaap_AccruedLiabilitiesCurrent 642us-gaap_AccruedLiabilitiesCurrent
Uncertain tax position 322us-gaap_LiabilityForUncertainTaxPositionsCurrent 272us-gaap_LiabilityForUncertainTaxPositionsCurrent
Hedging transaction liabilities 419us-gaap_HedgingLiabilitiesCurrent  
Accrued expenses and other current liabilities $ 6,942us-gaap_AccruedLiabilitiesAndOtherLiabilities $ 4,517us-gaap_AccruedLiabilitiesAndOtherLiabilities