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Financial Instruments - Additional Information (Detail) - USD ($)
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Derivative [Line Items]    
Net settlement liability $ 100,000  
Estimated amount of net foreign currency derivative gains (loss) in other comprehensive income reclassified to earnings $ (200,000)  
Minimum [Member]    
Derivative [Line Items]    
Foreign exchange contracts period 12 months  
Maximum [Member]    
Derivative [Line Items]    
Foreign exchange contracts period 15 months  
Foreign exchange contracts [Member]    
Derivative [Line Items]    
Notional amount of foreign currency derivative hedges $ 192,700,000  
Cash flow hedge    
Derivative [Line Items]    
Net (losses) gains recognized in OCI (6,700,000) $ 6,800,000
Cash flow hedge | Foreign exchange contracts [Member]    
Derivative [Line Items]    
Estimated amount of net foreign currency derivative gains (loss) in other comprehensive income reclassified to earnings $ 200,000