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, 2016	Mar. 31, 2015
Derivative [Line Items]
Amount released to pre - tax earnings	$ (2,890)	$ 72
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	10	0
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	(63)
Amount released to pre - tax earnings	$ (236)	$ (194)