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Notional Amounts and Gross Fair Values for Derivative Instruments without Hedge Accounting Designation (Detail) - Not Designated as Hedging Instrument $ in Thousands	Dec. 31, 2015 USD ($)
Derivative [Line Items]
Notional Amount	$ 14,086
Fair value of current liabilities	(581)
Forward Contracts [Member]
Derivative [Line Items]
Notional Amount	5,572
Fair value of current liabilities	(329)
Forward Contracts [Member] \| Canada, Dollars
Derivative [Line Items]
Notional Amount	4,200
Fair value of current liabilities	(246)
Forward Contracts [Member] \| Other Currencies
Derivative [Line Items]
Notional Amount	1,372
Fair value of current liabilities	(83)
Options Held [Member] \| Canada, Dollars
Derivative [Line Items]
Notional Amount	8,514
Fair value of current liabilities	$ (252)

Fair value, after the effects of master netting arrangements, of a financial liability or 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, expected to be settled within one year or normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset.

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