Derivative Instruments - Summary of Change in Fair Value Reclassified or Expected to be Reclassified from Accumulated Other Comprehensive Loss to Earnings (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Derivative [Line Items]
Amount released to pre - tax earnings	$ (4,783)	$ (2,890)
Foreign Currency Sales Contracts [Member] | Cash Flow Hedges [Member]
Derivative [Line Items]
Amount released to pre - tax earnings	0
Amount released to pre - tax earnings	0	10
Foreign Currency Purchase Contracts [Member]
Derivative [Line Items]
Amount released to pre - tax earnings	27
Amount released to pre - tax earnings	7	7
Futures Contracts - Copper and Aluminum [Member]
Derivative [Line Items]
Amount released to pre - tax earnings	411
Amount released to pre - tax earnings	$ 148	$ (236)