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Derivative Financial Instruments - Fair Value of Derivative Instruments (Detail) (Designated as Hedging Instrument [Member], Foreign Exchange Forward [Member], Other Current Assets [Member], USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Designated as Hedging Instrument [Member] \| Foreign Exchange Forward [Member] \| Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Foreign currency forward contracts	$ 3	$ 11

Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset.

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