XML 29 R76.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Executive Nonqualified Defined Benefit Plan - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Defined Benefit Plan Disclosure [Line Items] |  |  |
Vesting period | 6 years |  |
Discount rate for benefit obligation and net periodic service cost | 3.25%us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate | 4.25%us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate | 3.25%us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate
Insurance policy value | $ 2,056 us-gaap_LifeInsuranceCorporateOrBankOwnedAmount | $ 1,962 us-gaap_LifeInsuranceCorporateOrBankOwnedAmount |
Contributions to 401(k) plan | 543 us-gaap_DefinedContributionPlanEmployerDiscretionaryContributionAmount | 191 us-gaap_DefinedContributionPlanEmployerDiscretionaryContributionAmount | 161 us-gaap_DefinedContributionPlanEmployerDiscretionaryContributionAmount
Gentherm GmbH |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Underfunded defined benefit plan | 4,505 thrm_PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilitiesDefinedBenefitPlanFundedStatusOfPlan / dei_LegalEntityAxis = thrm_GenthermGmbHMember | 3,679 thrm_PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilitiesDefinedBenefitPlanFundedStatusOfPlan / dei_LegalEntityAxis = thrm_GenthermGmbHMember |
Chief Executive Officer |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Annual retirement payment | $ 300,000 us-gaap_OtherPostretirementBenefitsPayments / us-gaap_TitleOfIndividualAxis = us-gaap_ChiefExecutiveOfficerMember |  |
Number of expected annual retirement benefit payments | 15 thrm_NumberOfExpectedAnnualRetirementBenefitPayments / us-gaap_TitleOfIndividualAxis = us-gaap_ChiefExecutiveOfficerMember |  |
Annual retirement benefit payments, earliest date | Jan. 01, 2018 |  |

X
- Definition Annual retirement benefit payments, earliest date. + References No definition available. + Details
Name: | thrm_AnnualRetirementBenefitPaymentsEarliestDate
Namespace Prefix: | thrm_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration

X
- Definition Defined benefit plan vesting period. + References No definition available. + Details
Name: | thrm_DefinedBenefitPlanVestingPeriod
Namespace Prefix: | thrm_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of expected annual retirement benefit payments. + References No definition available. + Details
Name: | thrm_NumberOfExpectedAnnualRetirementBenefitPayments
Namespace Prefix: | thrm_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition A type of defined benefit plan that does not include any plan assets to pay for future pension benefit obligations. + References No definition available. + Details
Name: | thrm_PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilitiesDefinedBenefitPlanFundedStatusOfPlan
Namespace Prefix: | thrm_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The interest rate used to adjust for the time value of money. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k)(1) -URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_DefinedBenefitPlanDisclosureLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of discretionary contributions made by an employer to a defined contribution plan. + References No definition available. + Details
Name: | us-gaap_DefinedContributionPlanEmployerDiscretionaryContributionAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition This item represents the amount that could be realized under a life insurance contract or contracts owned by the Entity as of the date of the statement of financial position. Such Entity-owned life insurance policies are commonly known as corporate-owned life insurance (COLI) or bank-owned life insurance (BOLI). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.12) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 12 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 325 -SubTopic 30 -Section 25 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6384206&loc=d3e41899-111602 + Details
Name: | us-gaap_LifeInsuranceCorporateOrBankOwnedAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of cash or cash equivalents contributed during the reporting period by the entity to fund non-pension postretirement benefits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3536-108585 + Details
Name: | us-gaap_OtherPostretirementBenefitsPayments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | dei_LegalEntityAxis=thrm_GenthermGmbHMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_TitleOfIndividualAxis=us-gaap_ChiefExecutiveOfficerMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |