Fair Value Measurement	12 Months Ended
Dec. 31, 2021
Fair Value Disclosures [Abstract]
Fair Value Measurement	Note 14 — Fair Value Measurement Fair value is defined as the exchange price that would be received to sell an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. Fair value measurements are based on one or more of the following three valuation techniques: Market: This approach uses prices and other relevant information generated by market transactions involving identical or comparable assets or liabilities. Income: This approach uses valuation techniques to convert future amounts to a single present value amount based on current market expectations. Cost: This approach is based on the amount that would be required to replace the service capacity of an asset (replacement cost). The Company uses the following fair value hierarchy to measure fair value into three broad levels, which are described below: Level 1: Quoted prices (unadjusted) in active markets that are accessible at the measurement date for assets or liabilities. The fair value hierarchy gives the highest priority to Level 1 inputs. Level 2: Inputs, other than quoted market prices included in Level 1, that are observable either directly or indirectly for the asset or liability. Level 3: Unobservable inputs are used when little or no market data is available. The fair value hierarchy gives the lowest priority to Level 3 inputs. Items Measured at Fair Value on a Recurring Basis Except for derivative financial instruments (see Note 13) and pension plan assets (see Note 10), the Company has no material financial assets and liabilities that are carried at fair value at December 31, 2021 and 2020. In determining fair value, the Company utilizes valuation techniques that maximize the use of observable inputs and minimize the use of unobservable inputs to the extent possible and also considers counterparty credit risk in its assessment of fair value. Items Measured at Fair Value on a Nonrecurring Basis The Company measures certain assets and liabilities at fair value on a non-recurring basis. As these nonrecurring fair value measurements are generally determined using unobservable inputs, these fair value measurements are classified within Level 3 of the fair value hierarchy. On July 1, the Company acquired B&E for $2,827. The purchase price was allocated to inventory (Level 2), property and equipment (Level 2) and other intangible assets (Level 3) based on their estimated fair values as of the acquisition date. As of December 31, 2021, and December 31, 2020, there were no other significant assets or liabilities measured at fair value on a non-recurring basis. Items Not Carried at Fair Value The Company uses an income valuation technique to measure the fair values of its debt instruments by converting amounts of future cash flows to a single present value amount using rates based on current market expectations (Level 2 inputs). As of December 31, 2021, and 2020, the carrying values of the indebtedness under the Company’s Credit Agreement were not materially different than their estimated fair values because the interest rates on variable rate debt approximated rates currently available to the Company (see Note 9). Discount rates used to measure the fair value of Gentherm’s DEG Vietnam Loan are based on quoted swap rates. As of December 31, 2021, the carrying value of the DEG Vietnam Loan was $3,750, as compared to an estimated fair value of $3,778. As of December 31, 2020, the carrying value of the DEG Vietnam Loan was $6,250 as compared to an estimated fair value of $6,360.

Fair Value Measurement

12 Months Ended

Dec. 31, 2021

Note 14 — Fair Value Measurement

Fair value is defined as the exchange price that would be received to sell an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. Fair value measurements are based on one or more of the following three valuation techniques:

Market: This approach uses prices and other relevant information generated by market transactions involving identical or comparable assets or liabilities.

Income: This approach uses valuation techniques to convert future amounts to a single present value amount based on current market expectations.

Cost: This approach is based on the amount that would be required to replace the service capacity of an asset (replacement cost).

The Company uses the following fair value hierarchy to measure fair value into three broad levels, which are described below:

Level 1: Quoted prices (unadjusted) in active markets that are accessible at the measurement date for assets or liabilities. The fair value hierarchy gives the highest priority to Level 1 inputs.

Level 2: Inputs, other than quoted market prices included in Level 1, that are observable either directly or indirectly for the asset or liability.

Level 3: Unobservable inputs are used when little or no market data is available. The fair value hierarchy gives the lowest priority to Level 3 inputs.

Items Measured at Fair Value on a Recurring Basis

Except for derivative financial instruments (see Note 13) and pension plan assets (see Note 10), the Company has no material financial assets and liabilities that are carried at fair value at December 31, 2021 and 2020. In determining fair value, the Company utilizes valuation techniques that maximize the use of observable inputs and minimize the use of unobservable inputs to the extent possible and also considers counterparty credit risk in its assessment of fair value.

Items Measured at Fair Value on a Nonrecurring Basis

The Company measures certain assets and liabilities at fair value on a non-recurring basis. As these nonrecurring fair value measurements are generally determined using unobservable inputs, these fair value measurements are classified within Level 3 of the fair value hierarchy. On July 1, the Company acquired B&E for $2,827. The purchase price was allocated to inventory (Level 2), property and equipment (Level 2) and other intangible assets (Level 3) based on their estimated fair values as of the acquisition date. As of December 31, 2021, and December 31, 2020, there were no other significant assets or liabilities measured at fair value on a non-recurring basis.

Items Not Carried at Fair Value

The Company uses an income valuation technique to measure the fair values of its debt instruments by converting amounts of future cash flows to a single present value amount using rates based on current market expectations (Level 2 inputs). As of December 31, 2021, and 2020, the carrying values of the indebtedness under the Company’s Credit Agreement were not materially different than their estimated fair values because the interest rates on variable rate debt approximated rates currently available to the Company (see Note 9). Discount rates used to measure the fair value of Gentherm’s DEG Vietnam Loan are based on quoted swap rates. As of December 31, 2021, the carrying value of the DEG Vietnam Loan was $3,750, as compared to an estimated fair value of $3,778. As of December 31, 2020, the carrying value of the DEG Vietnam Loan was $6,250 as compared to an estimated fair value of $6,360.