Segment Information about Reported Product Revenues, Depreciation and Amortization and Operating Income (Loss) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Segment Reporting Information [Line Items]
Product revenues	$ 1,038,259	$ 985,683	$ 917,600
Type of Revenue [Extensible List]	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember
Depreciation and amortization	$ 50,638	$ 44,972	$ 37,764
Operating income (loss)	72,788	97,098	106,119
Automotive Segments
Segment Reporting Information [Line Items]
Product revenues	948,592	879,457	847,428
Industrial Segments
Segment Reporting Information [Line Items]
Product revenues	89,667	106,226	70,172
Operating Segments | Automotive Segments
Segment Reporting Information [Line Items]
Product revenues	$ 948,592	$ 879,457	$ 847,428
Type of Revenue [Extensible List]	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember
Depreciation and amortization	$ 43,621	$ 36,801	$ 31,826
Operating income (loss)	152,051	166,378	174,027
Operating Segments | Industrial Segments
Segment Reporting Information [Line Items]
Product revenues	$ 89,667	$ 106,226	$ 70,172
Type of Revenue [Extensible List]	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember
Depreciation and amortization	$ 4,384	$ 5,399	$ 3,789
Operating income (loss)	$ (22,530)	$ (14,751)	$ (16,702)
Reconciling Items
Segment Reporting Information [Line Items]
Type of Revenue [Extensible List]	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember
Depreciation and amortization	$ 2,633	$ 2,772	$ 2,149
Operating income (loss)	$ (56,733)	$ (54,529)	$ (51,206)