XML 58 R46.htm IDEA: XBRL DOCUMENT
v3.24.0.1

Summary of Significant Accounting Policies - Summary of Allowance for Doubtful Accounts (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Accounts Receivable, after Allowance for Credit Loss, Current [Abstract] |  |  |
Balance at beginning of year | $ 1,220 | $ 1,399 | $ 1,161
Charged to costs and expenses | 195 | 1,088 | 1,066
Currency translation and other | 4 |  | (12)
Deductions from reserves | (248) | (1,267) | (816)
Balance at end of year | $ 1,171 | $ 1,220 | $ 1,399

X
- Definition Allowance for doubtful accounts, charged to costs and expenses. + References No definition available. + Details
Name: | thrm_AllowanceForDoubtfulAccountsChargedToCostsAndExpenses
Namespace Prefix: | thrm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Allowance for doubtful accounts currency translation and other. + References No definition available. + Details
Name: | thrm_AllowanceForDoubtfulAccountsCurrencyTranslationAndOther
Namespace Prefix: | thrm_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Allowance for doubtful accounts, deductions from reserves. + References No definition available. + Details
Name: | thrm_AllowanceForDoubtfulAccountsDeductionsFromReserves
Namespace Prefix: | thrm_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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

X
- Definition Amount of allowance for credit loss on accounts receivable, classified as current. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(4)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479344/326-20-45-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-4 + Details
Name: | us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant