XML 36 R29.htm IDEA: XBRL DOCUMENT
v3.25.3

Commitments and Contingencies (Tables) | 9 Months Ended
--- | ---
Sep. 30, 2025
Commitments and Contingencies Disclosure [Abstract] |
Reconciliation of Changes in Accrued Warranty Costs | The following is a reconciliation of the changes in accrued warranty costs:
|  | Nine Months Ended September 30, |
|  | 2025 |  |  | 2024 |
Balance at the beginning of the period |  | $ | 3,507 |  |  | $ | 3,945 |
Warranty claims paid |  |  | (6,227 | ) |  |  | (4,882 | )
Warranty expense for products shipped during the current period |  |  | 8,345 |  |  |  | 4,017 |
Adjustments to warranty estimates from prior periods |  |  | 2,121 |  |  |  | 725 |
Adjustments due to currency translation |  |  | 161 |  |  |  | (4 | )
Balance at the end of the period |  | $ | 7,907 |  |  | $ | 3,801 |

X
- Definition Schedule of accrued warranty costs. + References No definition available. + Details
Name: | thrm_ScheduleOfAccruedWarrantyCostsTableTextBlock
Namespace Prefix: | thrm_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_CommitmentsAndContingenciesDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration