Derivative Instruments - Summary of Amount Recognized as and Reclassified from Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Derivative [Line Items]
Beginning of the Period	$ 106	$ 117	$ (64)	$ 739
Recognized	(134)	(198)	(87)	(519)
Reclassified	(53)	(46)	(176)	255
End of the Period	25	(35)	25	(35)
Foreign Currency Purchase Contracts [Member]
Derivative [Line Items]
Beginning of the Period	202	230	216	239
Recognized	0	0	0	0
Reclassified	6	7	20	16
End of the Period	196	223	196	223
Futures Contracts - Copper and Aluminum [Member]
Derivative [Line Items]
Beginning of the Period	(96)	(113)	(280)	500
Recognized	(134)	(198)	(87)	(519)
Reclassified	(59)	(53)	(196)	239
End of the Period	$ (171)	$ (258)	$ (171)	$ (258)