Overview	3 Months Ended
Mar. 31, 2021
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. We operate in locations aligned with our major customers’ product strategies to provide locally enhanced design, integration and production capabilities. We are also developing a number of new technologies and products that are expected to help enable improvements to existing products and to create new product applications for existing and new markets. 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, 2020. 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. 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 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. Impact of COVID-19 The COVID-19 pandemic began in China around December 2019. The impact of the outbreak quickly expanded beyond China and its surrounding region. The COVID-19 pandemic significantly disrupted and adversely impacted global economic activity and the global automotive markets in the first half of 2020, which had significant negative impacts on Gentherm’s financial performance in the first half of 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 2020, resuming production to near full capacity by the end of the first quarter, which continued throughout the second quarter of 2020. Other adverse impacts of the pandemic include supply chain and production disruptions, workforce restrictions, travel restrictions and reduced consumer spending. We significantly recovered in the second half of 2020, with increased strong production volumes versus the first half of that year and stronger than pre-COVID levels. This recovery continued in the first quarter of 2021. However, the COVID-19 pandemic is ongoing globally and continues to have a significant impact on global automotive markets in 2021, in the form of supply chain and production disruptions, workforce restrictions and travel restrictions, among other factors, and we remain subject to related risks. The increased consumer demand and vehicle production schedules in the second half of 2020, particularly in the fourth quarter, was unexpected in certain areas of our supply chain. This surge in demand, as well as a significant increased consumer demand for personal electronics, during the latter half of 2020 led to a worldwide semiconductor supply shortage in early 2021. Semiconductor suppliers have not been able to quickly reallocate production lines to serve the full capacity needs of the automotive industry. Other recent pandemic-related issues have exacerbated port congestion and intermittent supplier shutdowns and delays, resulting in additional expenses to expedite delivery of critical parts and manufacturing delays. Our suppliers also have experienced plant closures and production delays, and may continue to experience delays in manufacturing the materials and products we require according to our schedule and specifications. We are working closely with our suppliers and customers to minimize any potential adverse impacts, and we continue to closely monitor the availability of semiconductor microchips and other component parts and raw materials, customer vehicle production schedules and any other supply chain inefficiencies that may arise. The consequences of the pandemic and adverse impact to the economy continue to evolve and the future adverse impact on our business and financial statements remains subject to significant uncertainty as of the date of this filing. Segment Reporting The Company has two reportable segments: Automotive, which includes automotive climate comfort systems, automotive cable systems, battery performance solutions and automotive electronic and software systems; and Medical. In 2020, the previously-named Industrial reporting segment was renamed the Medical reporting segment to reflect the patient temperature management business as the focus and strategic direction of this segment. Also, during 2020, the advanced research and development costs not associated with the Medical segment were presented within the Automotive segment, as this organization primarily supports the Automotive related research and development activities following the divestitures of our former remote power generation systems business, Gentherm Global Power Technologies (“GPT”) and our former environmental test equipment business, Cincinnati Sub Zero industrial chamber business (“CSZ-IC”).

Overview

3 Months Ended

Mar. 31, 2021

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. We operate in locations aligned with our major customers’ product strategies to provide locally enhanced design, integration and production capabilities. We are also developing a number of new technologies and products that are expected to help enable improvements to existing products and to create new product applications for existing and new markets.

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, 2020. 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.

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 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.

Impact of COVID-19

The COVID-19 pandemic began in China around December 2019. The impact of the outbreak quickly expanded beyond China and its surrounding region. The COVID-19 pandemic significantly disrupted and adversely impacted global economic activity and the global automotive markets in the first half of 2020, which had significant negative impacts on Gentherm’s financial performance in the first half of 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 2020, resuming production to near full capacity by the end of the first quarter, which continued throughout the second quarter of 2020. Other adverse impacts of the pandemic include supply chain and production disruptions, workforce restrictions, travel restrictions and reduced consumer spending. We significantly recovered in the second half of 2020, with increased strong production volumes versus the first half of that year and stronger than pre-COVID levels. This recovery continued in the first quarter of 2021. However, the COVID-19 pandemic is ongoing globally and continues to have a significant impact on global automotive markets in 2021, in the form of supply chain and production disruptions, workforce restrictions and travel restrictions, among other factors, and we remain subject to related risks.

The increased consumer demand and vehicle production schedules in the second half of 2020, particularly in the fourth quarter, was unexpected in certain areas of our supply chain. This surge in demand, as well as a significant increased consumer demand for

personal electronics, during the latter half of 2020 led to a worldwide semiconductor supply shortage in early 2021. Semiconductor suppliers have not been able to quickly reallocate production lines to serve the full capacity needs of the automotive industry. Other recent pandemic-related issues have exacerbated port congestion and intermittent supplier shutdowns and delays, resulting in additional expenses to expedite delivery of critical parts and manufacturing delays. Our suppliers also have experienced plant closures and production delays, and may continue to experience delays in manufacturing the materials and products we require according to our schedule and specifications. We are working closely with our suppliers and customers to minimize any potential adverse impacts, and we continue to closely monitor the availability of semiconductor microchips and other component parts and raw materials, customer vehicle production schedules and any other supply chain inefficiencies that may arise. The consequences of the pandemic and adverse impact to the economy continue to evolve and the future adverse impact on our business and financial statements remains subject to significant uncertainty as of the date of this filing.

Segment Reporting

The Company has two reportable segments: Automotive, which includes automotive climate comfort systems, automotive cable systems, battery performance solutions and automotive electronic and software systems; and Medical.

In 2020, the previously-named Industrial reporting segment was renamed the Medical reporting segment to reflect the patient temperature management business as the focus and strategic direction of this segment. Also, during 2020, the advanced research and development costs not associated with the Medical segment were presented within the Automotive segment, as this organization primarily supports the Automotive related research and development activities following the divestitures of our former remote power generation systems business, Gentherm Global Power Technologies (“GPT”) and our former environmental test equipment business, Cincinnati Sub Zero industrial chamber business (“CSZ-IC”).