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Pension and Other Post Retirement Benefit Plans - Schedule of Future Expected Pension Payments (Detail) - Gentherm GmbH $ in Thousands | Dec. 31, 2021 USD ($)
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United States |
Defined Benefit Plan Disclosure [Line Items] |
2022 | $ 342
2023 | 342
2024 | 342
2025 | 342
2026 | 342
2027-2031 | 1,710
Total projected pension benefit payments | 3,420
German Plan |
Defined Benefit Plan Disclosure [Line Items] |
2022 | 306
2023 | 316
2024 | 309
2025 | 301
2026 | 292
2027-2031 | 2,988
Total projected pension benefit payments | $ 4,512

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