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Document and Entity Information
Jan. 27, 2020
Cover [Abstract]  
Entity Registrant Name GENTHERM Inc
Amendment Flag true
Entity Central Index Key 0000903129
Document Type 8-K/A
Document Period End Date Jan. 27, 2020
Entity Incorporation, State or Country Code MI
Entity File Number 0-21810
Entity Tax Identification Number 95-4318554
Entity Address, Address Line One 21680 Haggerty Road
Entity Address, City or Town Northville
Entity Address, State or Province MI
Entity Address, Postal Zip Code 48167
City Area Code (248)
Local Phone Number 504-0500
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Title of 12(b) Security Common Stock, no par value
Trading Symbol THRM
Security Exchange Name NASDAQ
Entity Emerging Growth Company false
Amendment Description This Current Report on Form 8-K/A amends the Current Report on Form 8-K that was filed with the Securities and Exchange Commission (the “SEC”) on January 31, 2020 (the “Original Form 8-K”) by Gentherm Incorporated (the “Company”) regarding the engagement of Ernst & Young LLP (“EY”) as the Company’s independent registered public accounting firm for the Company’s fiscal year ending December 31, 2020 (“fiscal 2020”) following the completion of the audit services provided by Grant Thornton LLP (“GT”) for the fiscal year ending December 31, 2019 and the filing of the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2019 (the “2019 Form 10-K”) with the SEC on February 20, 2020 (the “Effective Date”).