Overview	6 Months Ended
Jun. 30, 2020
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Overview	Note 1 – Overview Gentherm Incorporated is a global developer and marketer of innovative thermal management technologies for a broad range of heating and cooling and temperature control applications. Unless the context otherwise requires, the terms “Gentherm”, “Company”, “we”, “us” and “our” used herein refer to Gentherm Incorporated and its consolidated subsidiaries. Our products provide solutions for automotive passenger climate comfort and convenience, battery thermal management and cell connecting systems, as well as patient temperature management within the health care industry. Our automotive products can be found in the vehicles of nearly all major automotive manufacturers operating in North America and Europe, and several major automotive manufacturers in Asia. The Company operates in locations aligned with its major customers’ product strategies to provide locally enhanced design, integration and production capabilities. The Company is also developing a number of new technologies and products that will help enable improvements to existing products and to create new product applications for existing and new markets. On February 1, 2019, the Company completed the divestiture of its environmental test equipment business, Cincinnati Sub-Zero industrial chamber business (“CSZ-IC”) and on October 1, 2019, the Company completed the divestiture of its remote power generation systems business, Gentherm Global Power Technologies (“GPT”). The Company’s consolidated condensed financial statements herein include the results of CSZ-IC and GPT through their respective dates of divestiture. CSZ-IC and GPT are not subject to discontinued operations classification. On April 1, 2019, Gentherm acquired Stihler Electronic GmbH (“Stihler”), a leading developer and manufacturer of patient and blood temperature management systems. The acquisition was accounted for as a business combination. Basis of Presentation The unaudited consolidated condensed financial statements included herein have been prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) for interim financial information and pursuant to the rules and regulations of the U.S. Securities and Exchange Commission. Certain information and footnote disclosures normally included in financial statements prepared in accordance with U.S. GAAP have been condensed or omitted pursuant to those rules and regulations. The information furnished in the consolidated condensed financial statements include all adjustments (consisting of only normal, recurring adjustments), considered necessary to present fairly the results of operations, financial position and cash flows of the Company. These financial statements should be read in conjunction with the Company’s Annual Report on Form 10-K for the year ended December 31, 2019. The operating results for interim periods are not necessarily indicative of results that may be expected for any other interim period or for the full year. Impact of COVID-19 The COVID-19 pandemic has significantly disrupted global economic activity, including the automotive market. The COVID-19 pandemic began in China around December 2019. The impact of the outbreak quickly expanded beyond China and its surrounding region, and has significantly and adversely impacted the entire global economy and automotive market in 2020. During the first quarter of 2020, customer plants in North America and Europe were closed beginning in the second half of March due to the pandemic. This resulted in temporary, partial closures of several of our manufacturing facilities in North America and Europe by the end of March 2020. Customer plants and our manufacturing facilities in Asia were closed for several weeks in February and operated at reduced volumes in March, resuming production to near full capacity by the end of the first quarter, which continued throughout the second quarter. However, during the second quarter of 2020, our manufacturing facilities in North America and Europe remained closed until the last week in May due to the pandemic, gradually resuming production to near full capacity in North America, and to about 70% capacity in Europe by the end of June. The COVID-19 pandemic had a significant adverse impact on global automotive markets in the second quarter of 2020 and such adverse impact is continuing, driven by supply chain and production disruptions, workforce restrictions, travel restrictions and reduced consumer spending, among other factors, which had significant negative impacts on Gentherm’s financial performance in the first half of 2020. The consequences of the pandemic and adverse impact to the economy continue to evolve and the full extent of the adverse impact on our business and financial statements remains uncertain as of the date of this filing. In preparing these financial statements, management was required to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenues and expenses. These estimates and assumptions are based on our historical experience, the terms of existing contracts, our evaluation of trends in the industry, information provided by our customers and suppliers and information available from other outside sources, as appropriate. These estimates and assumptions are subject to an inherent degree of uncertainty. We are not presently aware of any events or circumstances arising from the COVID-19 pandemic that would require us to update such estimates and assumptions or revise the carrying value of our assets or liabilities. Our estimates may change, however, as new events occur and additional information is obtained. As a result, actual results may differ significantly from our estimates, and any such differences may be material to our financial statements.

Overview

6 Months Ended

Jun. 30, 2020

Organization Consolidation And Presentation Of Financial Statements [Abstract]

Note 1 – Overview

Gentherm Incorporated is a global developer and marketer of innovative thermal management technologies for a broad range of heating and cooling and temperature control applications. Unless the context otherwise requires, the terms “Gentherm”, “Company”, “we”, “us” and “our” used herein refer to Gentherm Incorporated and its consolidated subsidiaries. Our products provide solutions for automotive passenger climate comfort and convenience, battery thermal management and cell connecting systems, as well as patient temperature management within the health care industry. Our automotive products can be found in the vehicles of nearly all major automotive manufacturers operating in North America and Europe, and several major automotive manufacturers in Asia. The Company operates in locations aligned with its major customers’ product strategies to provide locally enhanced design, integration and production capabilities. The Company is also developing a number of new technologies and products that will help enable improvements to existing products and to create new product applications for existing and new markets.

On February 1, 2019, the Company completed the divestiture of its environmental test equipment business, Cincinnati Sub-Zero industrial chamber business (“CSZ-IC”) and on October 1, 2019, the Company completed the divestiture of its remote power generation systems business, Gentherm Global Power Technologies (“GPT”). The Company’s consolidated condensed financial statements herein include the results of CSZ-IC and GPT through their respective dates of divestiture. CSZ-IC and GPT are not subject to discontinued operations classification.

On April 1, 2019, Gentherm acquired Stihler Electronic GmbH (“Stihler”), a leading developer and manufacturer of patient and blood temperature management systems. The acquisition was accounted for as a business combination.

Basis of Presentation

The unaudited consolidated condensed financial statements included herein have been prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) for interim financial information and pursuant to the rules and regulations of the U.S. Securities and Exchange Commission. Certain information and footnote disclosures normally included in financial statements prepared in accordance with U.S. GAAP have been condensed or omitted pursuant to those rules and regulations. The information furnished in the consolidated condensed financial statements include all adjustments (consisting of only normal, recurring adjustments), considered necessary to present fairly the results of operations, financial position and cash flows of the Company. These financial statements should be read in conjunction with the Company’s Annual Report on Form 10-K for the year ended December 31, 2019. The operating results for interim periods are not necessarily indicative of results that may be expected for any other interim period or for the full year.

Impact of COVID-19

The COVID-19 pandemic has significantly disrupted global economic activity, including the automotive market. The COVID-19 pandemic began in China around December 2019. The impact of the outbreak quickly expanded beyond China and its surrounding region, and has significantly and adversely impacted the entire global economy and automotive market in 2020. During the first quarter of 2020, customer plants in North America and Europe were closed beginning in the second half of March due to the pandemic. This resulted in temporary, partial closures of several of our manufacturing facilities in North America and Europe by the end of March 2020. Customer plants and our manufacturing facilities in Asia were closed for several weeks in February and operated at reduced volumes in March, resuming production to near full capacity by the end of the first quarter, which continued throughout the second quarter. However, during the second quarter of 2020, our manufacturing facilities in North America and Europe remained closed until the last week in May due to the pandemic, gradually resuming production to near full capacity in North America, and to about 70% capacity in Europe by the end of June.

The COVID-19 pandemic had a significant adverse impact on global automotive markets in the second quarter of 2020 and such adverse impact is continuing, driven by supply chain and production disruptions, workforce restrictions, travel restrictions and reduced consumer spending, among other factors, which had significant negative impacts on Gentherm’s financial performance in the first half of 2020. The consequences of the pandemic and adverse impact to the economy continue to evolve and the full extent of the adverse impact on our business and financial statements remains uncertain as of the date of this filing.

In preparing these financial statements, management was required to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenues and expenses. These estimates and assumptions are based on our historical experience, the terms of existing contracts, our evaluation of trends in the industry, information provided by our customers and suppliers and information available from other outside sources, as appropriate. These estimates and assumptions are subject to an inherent degree of uncertainty. We are not presently aware of any events or circumstances arising from the COVID-19 pandemic that would require us to update such estimates and assumptions or revise the carrying value of our assets or liabilities. Our estimates may change, however, as new events occur and additional information is obtained. As a result, actual results may differ significantly from our estimates, and any such differences may be material to our financial statements.