Segment Reporting - Segment Information About Reported Segment Product Revenues by Product Category (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Segment Reporting Information [Line Items]
Product revenues	$ 260,715	$ 266,005	$ 528,372	$ 554,540
Automotive Segments
Segment Reporting Information [Line Items]
Product revenues	249,152	255,105	507,016	534,475
Automotive Segments | Climate Control Seat
Segment Reporting Information [Line Items]
Product revenues	96,488	98,229	199,222	207,402
Automotive Segments | Seat Heaters
Segment Reporting Information [Line Items]
Product revenues	65,903	69,864	134,799	146,585
Automotive Segments | Steering Wheel Heaters
Segment Reporting Information [Line Items]
Product revenues	28,951	26,697	57,687	55,561
Automotive Segments | Automotive Cables
Segment Reporting Information [Line Items]
Product revenues	19,280	22,940	41,325	47,221
Automotive Segments | Battery Performance Solutions
Segment Reporting Information [Line Items]
Product revenues	17,451	17,577	35,064	35,337
Automotive Segments | Electronics
Segment Reporting Information [Line Items]
Product revenues	10,278	14,652	21,106	29,757
Automotive Segments | Other Automotive
Segment Reporting Information [Line Items]
Product revenues	10,801	5,146	17,813	12,612
Industrial Segments | Medical Segments
Segment Reporting Information [Line Items]
Product revenues	$ 11,563	$ 10,900	$ 21,356	$ 20,065