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Fair Value of Outstanding Derivative Instruments (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Derivative [Line Items]
Derivative liabilities	$ 64us-gaap_ForeignCurrencyContractsLiabilityFairValueDisclosure	$ 16us-gaap_ForeignCurrencyContractsLiabilityFairValueDisclosure
Foreign exchange option contracts | Derivatives designated as cash flow hedging instruments
Derivative [Line Items]
Derivative liabilities	52us-gaap_ForeignCurrencyContractsLiabilityFairValueDisclosure / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_ForeignExchangeOptionMember / us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis = us-gaap_CashFlowHedgingMember
Foreign exchange forward contracts | Derivatives designated as cash flow hedging instruments
Derivative [Line Items]
Derivative liabilities	$ 12us-gaap_ForeignCurrencyContractsLiabilityFairValueDisclosure / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_ForeignExchangeForwardMember / us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis = us-gaap_CashFlowHedgingMember	$ 16us-gaap_ForeignCurrencyContractsLiabilityFairValueDisclosure / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_ForeignExchangeForwardMember / us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis = us-gaap_CashFlowHedgingMember

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- Details

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- Definition

Fair value portion of liability contracts related to the exchange of different currencies, including, but not limited to, foreign currency options, forward (delivery or nondelivery) contracts, and swaps entered into.

+ References

No definition available.

+ Details

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Balance Type:	credit
Period Type:	instant

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- Details

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X

- Details

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Namespace Prefix:
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Balance Type:
Period Type: