Derivative Instruments and Hedging Activities - Open Foreign Currency Contracts (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Derivative [Line Items]
Derivative, Fair Value, Net	$ 298	$ 2,599
Cash Flow Hedging | Foreign currency contracts
Derivative [Line Items]
Notional Amounts (in U.S. dollars)	106,965
Derivative, Fair Value, Net	298
Australian Dollar | Cash Flow Hedging | Foreign currency contracts
Derivative [Line Items]
Notional Amounts (in U.S. dollars)	22,498
Derivative, Fair Value, Net	771
Canadian Dollar | Cash Flow Hedging | Foreign currency contracts
Derivative [Line Items]
Notional Amounts (in U.S. dollars)	65,154
Derivative, Fair Value, Net	1,357
Japanese Yen | Cash Flow Hedging | Foreign currency contracts
Derivative [Line Items]
Notional Amounts (in U.S. dollars)	1,371
Derivative, Fair Value, Net	(57)
Mexican Peso | Cash Flow Hedging | Foreign currency contracts
Derivative [Line Items]
Notional Amounts (in U.S. dollars)	17,942
Derivative, Fair Value, Net	$ (1,773)