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Segment Reporting - Segment Information About Reported Segment Product Revenues by Product Category (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Segment Reporting Information [Line Items]
Product revenues	$ 371,512	$ 366,195	$ 1,103,210	$ 1,102,143
Automotive Segments
Segment Reporting Information [Line Items]
Product revenues	358,804	354,782	1,067,444	1,069,007
Automotive Segments | Climate Control Seat
Segment Reporting Information [Line Items]
Product revenues	115,498	124,905	352,789	360,868
Automotive Segments | Seat Heaters
Segment Reporting Information [Line Items]
Product revenues	72,982	77,238	227,114	231,132
Automotive Segments | Lumbar and Massage Comfort Solutions
Segment Reporting Information [Line Items]
Product revenues	48,970	33,260	133,090	109,602
Automotive Segments | Steering Wheel Heaters
Segment Reporting Information [Line Items]
Product revenues	44,711	39,861	126,939	115,166
Automotive Segments | Valve System
Segment Reporting Information [Line Items]
Product revenues	26,082	27,830	81,974	82,516
Automotive Segments | Automotive Cables
Segment Reporting Information [Line Items]
Product revenues	16,834	19,668	57,185	60,131
Automotive Segments | Battery Performance Solutions
Segment Reporting Information [Line Items]
Product revenues	16,869	17,242	46,540	57,138
Automotive Segments | Electronics
Segment Reporting Information [Line Items]
Product revenues	10,862	10,163	26,218	30,456
Automotive Segments | Other Automotive
Segment Reporting Information [Line Items]
Product revenues	5,996	4,615	15,595	21,998
Industrial Segments | Medical
Segment Reporting Information [Line Items]
Product revenues	$ 12,708	$ 11,413	$ 35,766	$ 33,136

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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