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Document And Entity Information
Apr. 24, 2025
Cover [Abstract]  
Document Type 8-K
Amendment Flag false
Document Period End Date Apr. 24, 2025
Entity Registrant Name GENTHERM INCORPORATED
Entity Central Index Key 0000903129
Entity Emerging Growth Company false
Entity File Number 0-21810
Entity Incorporation, State or Country Code MI
Entity Tax Identification Number 95-4318554
Entity Address, Address Line One 28875 Cabot Drive
Entity Address, City or Town Novi
Entity Address, State or Province MI
Entity Address, Postal Zip Code 48377
City Area Code (248)
Local Phone Number 348-9735
Entity Information, Former Legal or Registered Name N/A
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