Derivative Instruments - Summary of Amount Recognized as and Reclassified from Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Derivative [Line Items]
Beginning of the Period	$ 323	$ 215	$ (64)	$ 739
Recognized	(221)	(6)	47	(321)
Reclassified	(4)	92	(123)	301
End of the Period	106	117	106	117
Foreign Currency Purchase Contracts [Member]
Derivative [Line Items]
Beginning of the Period	209	232	216	239
Recognized	0	0	0	0
Reclassified	7	2	14	9
End of the Period	202	230	202	230
Futures Contracts - Copper and Aluminum [Member]
Derivative [Line Items]
Beginning of the Period	114	(17)	(280)	500
Recognized	(221)	(6)	47	(321)
Reclassified	(11)	90	(137)	292
End of the Period	$ (96)	$ (113)	$ (96)	$ (113)