Segment Reporting - Segment Information About Reported Segment Product Revenues by Product Category (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Segment Reporting Information [Line Items]
Product revenues	$ 332,962	$ 243,384	$ 861,334	$ 797,924
Automotive Segments
Segment Reporting Information [Line Items]
Product revenues	322,555	233,028	829,570	767,503
Automotive Segments | Climate Control Seat
Segment Reporting Information [Line Items]
Product revenues	112,059	89,991	311,281	297,393
Automotive Segments | Seat Heaters
Segment Reporting Information [Line Items]
Product revenues	75,568	61,516	210,367	208,101
Automotive Segments | Steering Wheel Heaters
Segment Reporting Information [Line Items]
Product revenues	31,482	24,578	89,169	80,139
Automotive Segments | Automotive Cables
Segment Reporting Information [Line Items]
Product revenues	18,338	19,465	59,662	66,686
Automotive Segments | Battery Performance Solutions
Segment Reporting Information [Line Items]
Product revenues	20,331	16,928	55,395	52,265
Automotive Segments | Electronics
Segment Reporting Information [Line Items]
Product revenues	12,083	11,567	33,190	41,324
Automotive Segments | Lumbar and Massage Comfort Solutions
Segment Reporting Information [Line Items]
Product revenues	22,740		22,740
Automotive Segments | Valve System Technologies
Segment Reporting Information [Line Items]
Product revenues	18,542		18,542
Automotive Segments | Other Automotive
Segment Reporting Information [Line Items]
Product revenues	11,412	8,983	29,224	21,595
Industrial Segments | Medical Segments
Segment Reporting Information [Line Items]
Product revenues	$ 10,407	$ 10,356	$ 31,764	$ 30,421