Fair Value of Outstanding Derivative Instruments (Detail) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Derivative [Line Items]
Derivative assets	$ 48	$ 9
Derivative liabilities	12
Foreign exchange forward contracts \| Derivatives designated as cash flow hedging instruments
Derivative [Line Items]
Derivative assets		$ 9
Derivative liabilities	12
Foreign exchange option contracts \| Derivatives designated as cash flow hedging instruments
Derivative [Line Items]
Derivative assets	$ 48

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.

No definition available.

Name:	us-gaap_ForeignCurrencyContractsLiabilityFairValueDisclosure
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant