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Segment Reporting - Segment Information About Reported Segment Product Revenues by Product Category (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Segment Reporting Information [Line Items]
Product revenues	$ 375,683	$ 372,323	$ 731,698	$ 735,948
Automotive Segments
Segment Reporting Information [Line Items]
Product revenues	364,002	361,533	708,640	714,225
Automotive Segments | Climate Control Seat
Segment Reporting Information [Line Items]
Product revenues	121,701	121,210	237,291	235,963
Automotive Segments | Seat Heaters
Segment Reporting Information [Line Items]
Product revenues	77,056	78,258	154,132	153,894
Automotive Segments | Lumbar and Massage Comfort Solutions
Segment Reporting Information [Line Items]
Product revenues	45,869	37,604	84,120	76,342
Automotive Segments | Steering Wheel Heaters
Segment Reporting Information [Line Items]
Product revenues	42,414	38,958	82,228	75,305
Automotive Segments | Valve System
Segment Reporting Information [Line Items]
Product revenues	29,267	27,692	55,892	54,686
Automotive Segments | Automotive Cables
Segment Reporting Information [Line Items]
Product revenues	18,832	20,243	40,351	40,463
Automotive Segments | Battery Performance Solutions
Segment Reporting Information [Line Items]
Product revenues	16,063	19,587	29,671	39,896
Automotive Segments | Electronics
Segment Reporting Information [Line Items]
Product revenues	7,171	9,323	15,356	20,293
Automotive Segments | Other Automotive
Segment Reporting Information [Line Items]
Product revenues	5,629	8,658	9,599	17,383
Industrial Segments | Medical
Segment Reporting Information [Line Items]
Product revenues	$ 11,681	$ 10,790	$ 23,058	$ 21,723

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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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