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Segment Reporting - Segment Information About Reported Segment Product Revenues by Product Category (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Segment Reporting Information [Line Items] |  |  |
Product revenues | $ 913,098 | $ 971,684 | $ 1,048,505
Automotive Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Product revenues | 869,998 | 920,225 | 957,824
Automotive Segments | Climate Control Seat (CCS) |  |  |
Segment Reporting Information [Line Items] |  |  |
Product revenues | 342,550 | 359,355 | 373,945
Automotive Segments | Seat Heaters |  |  |
Segment Reporting Information [Line Items] |  |  |
Product revenues | 249,665 | 284,174 | 305,337
Automotive Segments | Steering Wheel Heaters |  |  |
Segment Reporting Information [Line Items] |  |  |
Product revenues | 76,272 | 65,426 | 69,845
Automotive Segments | Automotive Cables |  |  |
Segment Reporting Information [Line Items] |  |  |
Product revenues | 73,997 | 88,031 | 98,931
Automotive Segments | Electronics |  |  |
Segment Reporting Information [Line Items] |  |  |
Product revenues | 53,238 | 47,542 | 56,783
Automotive Segments | Battery Thermal Management (BTM) |  |  |
Segment Reporting Information [Line Items] |  |  |
Product revenues | 50,901 | 41,498 | 28,472
Automotive Segments | Other Automotive |  |  |
Segment Reporting Information [Line Items] |  |  |
Product revenues | 23,375 | 34,199 | 24,511
Industrial Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Product revenues | 43,100 | 51,459 | 90,681
Industrial Segments | Medical |  |  |
Segment Reporting Information [Line Items] |  |  |
Product revenues | $ 43,100 | 36,860 | 30,108
Industrial Segments | GPT |  |  |
Segment Reporting Information [Line Items] |  |  |
Product revenues |  | 11,181 | 19,520
Industrial Segments | CSZ-IC |  |  |
Segment Reporting Information [Line Items] |  |  |
Product revenues |  | $ 3,418 | $ 41,053

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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8906-108599 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 40 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e9031-108599 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e9038-108599 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8933-108599 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8933-108599 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130543-203045 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8736-108599 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8736-108599 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 42 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e9054-108599 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130545-203045 Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 924 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 11.L) -URI http://asc.fasb.org/extlink&oid=6472922&loc=d3e499488-122856 + Details
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