Segment Reporting - Segment Information About Reported Segment Product Revenues by Product Category (Detail) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
Product revenues		$ 1,204,656	$ 1,046,150	$ 913,098
Automotive Segments
Segment Reporting Information [Line Items]
Product revenues		1,161,616	1,004,633	869,998
Automotive Segments | Climate Control Seat
Segment Reporting Information [Line Items]
Product revenues		426,046	393,816	342,550
Automotive Segments | Seat Heaters
Segment Reporting Information [Line Items]
Product revenues		283,970	270,054	249,665
Automotive Segments | Steering Wheel Heaters
Segment Reporting Information [Line Items]
Product revenues		120,949	102,496	76,272
Automotive Segments | Automotive Cables
Segment Reporting Information [Line Items]
Product revenues		76,962	84,114	73,997
Automotive Segments | Battery Performance Solutions
Segment Reporting Information [Line Items]
Product revenues		71,907	69,594	50,901
Automotive Segments | Electronics
Segment Reporting Information [Line Items]
Product revenues		44,106	51,648	53,238
Automotive Segments | Lumbar and Massage Comfort Solutions
Segment Reporting Information [Line Items]
Product revenues	[1]	56,980
Automotive Segments | Valve System Technologies
Segment Reporting Information [Line Items]
Product revenues	[1]	41,980
Automotive Segments | Other Automotive
Segment Reporting Information [Line Items]
Product revenues		38,716	32,911	23,375
Industrial Segments | Medical
Segment Reporting Information [Line Items]
Product revenues	[1]	$ 43,040	$ 41,517	$ 43,100

[1] Includes product revenues from acquisitions since their respective acquisition dates (see Note 4).