SUMMARY OF SIGNIFICANT ACCOUNTING AND REPORTING POLICIES (Policies)	12 Months Ended
Dec. 31, 2024
Accounting Policies [Abstract]
Consolidation	Consolidation The consolidated financial statements include the accounts of Gentex Corporation and all of its wholly-owned subsidiaries. All intercompany accounts and transactions have been eliminated.
Cash Equivalents	Cash Equivalents Cash equivalents consist of funds invested in bank accounts and money market funds that have daily liquidity.
Allowance For Doubtful Accounts	Allowance For Doubtful Accounts The Company reviews a monthly aging report of all accounts receivable balances starting with invoices outstanding over sixty days. In addition, the Company monitors information about its customers through a variety of sources including the media, and information obtained through ongoing interaction between Company personnel and the customer. Based on the evaluation of the above information, the Company estimates its allowances related to customer receivables on historical credit and collections experience, customers current financial condition and the specific identification of other potential problems, including the economic climate and impact the supply chain constraints has had on specific customers. Actual collections can differ, requiring adjustments to the allowances, but historically such adjustments have not been material. The Company’s allowance for doubtful accounts primarily relates to financially distressed automotive customers. The Company continues to work with these financially distressed customers in collecting past due balances.
Investments	Investments Available for sale securities The Company follows the provisions of ASC 820, Fair Value Measurements and Disclosures, for its financial assets and liabilities, and for its non-financial assets and liabilities subject to fair value measurements. ASC 820 provides a framework for measuring the fair value of assets and liabilities. This framework is intended to provide increased consistency in how fair value determinations are made under various existing accounting standards that permit, or in some cases, require estimates of fair-market value. This standard also expanded financial statement disclosure requirements about a company’s use of fair-value measurements, including the effect of such measurement on earnings. The cost of securities sold is based on the specific identification method. The Company determines the fair value of its government securities, asset-backed securities, corporate bonds, and certain municipal bonds by utilizing monthly valuation statements that are provided by its broker. The broker determines the investment valuation by utilizing the bid price in the market and also refers to third party sources to validate valuations, and as such are classified as Level 2 assets. The Company's certificates of deposit are classified as available for sale, and are considered as Level 1 assets. These investments are carried at amortized cost, which approximates fair value. On October 4, 2023, the Company entered into a Stock Purchase Agreement to acquire up to 3,137,500 shares of VOXX International Corporation ("VOXX") Class A Common Stock. The Company agreed to purchase the shares in two tranches: (1) on October 6, 2023, the Company purchased 1,568,750 shares of Class A Common Stock at a price of $10 per share, and (2) on January 5, 2024, the Company purchased 1,568,750 shares of Class A Common Stock at a price of $10 per share. On August 23, 2024, the Company entered into another Stock Purchase Agreement and acquired an additional 3,152,500 shares of Class A Common Stock on that date at $5 per share for investment purposes. The Company has the intention and current ability to hold the VOXX investment, and therefore has recorded the investment within Long-term Investments in the consolidated balance sheet. As of December 31, 2024, the Company holds a total of 6,463,308 shares of VOXX. The VOXX shares held by the Company are publicly traded and have a readily determinable fair market value and are considered Level 1 assets. Prior to the August 2024 purchases, the investment was accounted for in accordance with ASC 321, Investments - Equity Securities, with changes in fair value recorded in Investment income, net in consolidated statements of income. As a result of the August 2024 purchase, the Company began accounting for the VOXX investment in accordance with ASC 323 – Investments – Equity Method and Joint Venture, with the election to use the Fair Value Option under ASC 825 - Fair Value. As a result of this election, changes in fair value of the shares are recorded in Investment income, net in the consolidated statements of income. The Company recorded $2.4 million of loss during the year ended December 31, 2024 relating to mark to market adjustments in Investment Income, net related to VOXX. On December 17, 2024, as previously disclosed, the Company entered into a definitive agreement and plan of merger for the Company to acquire shares of VOXX in an all-cash transaction. Under the terms of the agreement, the Company will acquire all the issued and outstanding shares of VOXX common stock not already owned by the Company for a purchase price of $7.50 per share. The transaction is subject to approval of VOXX’s stockholders, certain regulatory approvals and other customary closing conditions, and is expected to close in the first half of 2025. Technology Investments The Company also periodically makes strategic investments in the non-marketable debt or equity securities of non-consolidated third parties ("technology investments"). Such technology investments totaled approximately $155.9 million at December 31, 2024, of which $149.9 million and $6.0 million are recorded in long-term investments and short-term investments on the consolidated balance sheet, and $128.0 million as of December 31, 2023, of which $124.6 million and $3.4 million are recorded in long-term investments and short-term investments on the consolidated balance sheet. Depending on the form of investment, and the degree of influence the Company has over the investee, the Company primarily accounts for the technology investments in accordance with ASC 321, Investments- Equity Securities or ASC 323 – Investments – Equity Method and Joint Venture. The Company accounts for equity securities in non-controlled affiliates through which the Company exercises significant influence but does not have control over the investee under the equity method, with the Company’s share of the earnings or losses of non-controlled affiliates recognized within Other loss, net in the Company's consolidated statement of income. All other technology investments that the Company holds are primarily accounted for under the measurement alternative of ASC 321. Under the measurement alternative, the carrying value is measured at cost, less any impairment, plus or minus changes resulting from observable price changes in orderly transactions for identical or similar investments of the same issuer. A summary of the Company’s most significant technology investments is below: Adasky Ltd. - Adasky is an Israeli based leading developer and manufacturer of intelligent, high-resolution thermal sensing systems for vehicle safety and perception applications and smart city roadway solutions. During 2023, the Company invested approximately $46.5 million in Adasky, which resulted in an approximately 27% ownership stake in Adasky. These investments included approximately $25 million related to preferred shares of Adasky accounted for using the measurement alternative and $21.5 million for common shares of Adasky accounted for using the equity method. As of December 31, 2024 and 2023, the carrying value of the Company’s investments in Adasky was $44.0 million and $45.8 million, respectively. Green Marbles - GreenMarbles is a provider of sustainable solutions for integration into properties. On June 3, 2022, the Company obtained an approximate 20% equity share in GreenMarbles for $25.0 million, consisting of $20.0 million of cash investment and the issuance of $5.0 million worth of the Company's common stock. The Company accounts for its investment in GreenMarbles using the equity method. As of December 31, 2024 and 2023, the carrying value of the investment in GreenMarbles was $20.8 million and $22.6 million, respectively. SAAM - SAAM is the maker of HavenGO and a leader in indoor air quality and chemical detection technology, with its development efforts focusing on the design and manufacturing of an advanced mobile indoor air quality monitor. During the years ended December 31, 2024 and 2023, the Company made investments of $2.4 million and $5.0 million in SAAM, respectively. As of December 31, 2024, the Company has an approximately 34% ownership interest in SAAM. The Company accounts for its investment in SAAM using the measurement alternative. As of December 31, 2024 and 2023, the carrying value of the investment in SAAM was $10.3 million and $7.7 million, respectively. Simplenight - Simplenight provides drivers and vehicle occupants with access to enhanced mobile capability for booking personalized entertainment and lifestyle experiences in addition to everyday purchases. During the years ended December 31, 2024 and 2023, the Company made investments of $7.5 million and $7.5 million in Simplenight, respectively, and as of December 31, 2024, the Company has an approximately 31% ownership interest in Simplenight primarily accounted for using the measurement alternative. As of December 31, 2024 and 2023, the carrying value of the Company’s investments in Simplenight was $29.2 million and $20.9 million, respectively. Solace Power - Solace Power is a Canada-based company specializing in wireless power solutions. On December 12, 2023, the Company purchased a 13% equity interest in Solace Power, which is accounted for using the measurement alternative. As of both December 31, 2024 and 2023, the carrying value of the Company's investment in Solace Power was $7.1 million. Retispec - RetiSpec is an artificial intelligence medical imaging company developing a tool for the early detection of disease biomarkers in the eye. During the year ended December 31, 2024, the Company made an additional investment of $2.0 million for an additional 3% equity share in RetiSpec, for a total of 14% ownership interest. The Company also recognized a $3.7 million revaluation gain as part of this additional round of investment, which included new investors in the entity. The Company accounts for RetiSpec using the measurement alternative. As of December 31, 2024 and 2023, the carrying value of the Company's investments in RetiSpec was $10.0 million and $4.2 million, respectively. The Company utilizes the guidance provided by ASC 326 to determine whether any of the available-for-sale debt securities held by the Company were impaired. No investments were considered to be impaired during the years presented. The Company has the intention and current ability to hold its debt investments until the amortized cost basis has been recovered. If market, industry, and/or investee conditions deteriorate, the Company may incur future impairments.
Fair Value of Financial Instruments	Fair Value of Financial Instruments The Company’s financial instruments consist of cash and cash equivalents, investments, accounts receivable, accounts payable, and short and long-term debt. The Company’s estimate of the fair values of these financial instruments approximates their carrying amounts at December 31, 2024 and 2023.
Inventories	Inventories Inventories include material, direct labor and manufacturing overhead and are valued at the lower of cost or net realizable value. Cost is determined on a standard cost basis that approximates the first-in, first-out (FIFO) method.Estimated inventory allowances for slow-moving and obsolete inventories are based on current assessments of future demands, market conditions, evaluation of longer lead times for certain electronic components and related management initiatives. If market conditions or customer requirements change and are less favorable than those projected by management, inventory allowances are adjusted accordingly.
Plant and Equipment	Plant and Equipment Plant and equipment is stated at cost. Depreciation and amortization are computed for financial reporting purposes using the straight-line method, with estimated useful lives of 7 to 30 years for buildings and improvements, and 3 to 10 years for machinery and equipment.
Impairment or Disposal of Long-Lived Assets	Impairment or Disposal of Long-Lived Assets The Company reviews long-lived assets, including property, plant and equipment and other intangible assets with definite lives, for impairment whenever events or changes in circumstances indicate that the asset’s carrying amount may not be recoverable. The Company conducts its long-lived asset impairment analysis in accordance with ASC 360-10-15, Impairment or Disposal of Long-Lived Assets. ASC 360-10-15 requires the Company to group assets and liabilities at the lowest level for which identifiable cash flows are largely independent of the cash flows of other assets and liabilities and evaluate the asset group against the sum of the undiscounted future cash flows. If the undiscounted cash flows do not indicate the carrying amount of the asset is recoverable, an impairment charge is measured as the amount by which the carrying amount of the asset group exceeds its fair value based on discounted cash flow analysis or appraisals.
Patents	Patents The Company’s policy is to capitalize costs incurred to obtain patents. The cost of patents is amortized over their useful lives. The cost of patents in process is not amortized until issuance. The Company periodically obtains intellectual property rights, in the ordinary course of business, and the cost of the rights are amortized over their useful lives.
Goodwill and Intangible Assets	Goodwill and Intangible Assets Goodwill reflects the cost of an acquisition in excess of the fair values assigned to identifiable net assets acquired. The Company reviews goodwill for impairment during the fourth quarter on an annual basis or more frequently if events or changes in circumstances indicate that goodwill might be impaired. The Company performs an impairment review for each of its reporting units with goodwill, which are Automotive, Dimmable Aircraft Windows, Nanofiber, Medical, and Biometrics, using either a qualitative approach or quantitative approach which utilizes a fair value method that incorporates certain assumptions and judgments. The fair value of a reporting unit refers to the price that would be received to sell the unit as a whole in an orderly transaction between market participants at the measurement date. The Company performs a qualitative assessment (step 0) to determine whether it is more likely than not that a reporting unit's fair value is less than its carrying amount. If not, no further goodwill impairment testing is performed. If so, the Company performs a step 1 test to determine the fair value of the reporting unit using an income approach to estimate the fair value of each of its reporting units and a market valuation approach to further support this analysis. If the fair value of the reporting unit is greater than its carrying amount, goodwill is not considered to be impaired. However, if the fair value of the reporting unit is less than its carrying amount, an impairment change is recorded as the excess of the reporting unit's carrying value over its fair value. The assumptions included in the impairment tests require judgment and changes to these inputs could impact the results of the calculations which could result in an impairment charge in future periods if the carrying amount of the reporting unit exceeds its calculated fair value. For the qualitative assessment performed, management considers factors such as macro-economic conditions, industry and market considerations, overall financial performance, and other Company-specific events, amongst other factors, in making the determination as to whether it is more likely than not that a reporting unit's fair value is less than its carrying amount. Other than management's internal projections of future cash flows, the primary assumptions used in the step 1 impairment test is the weighted-average cost of capital and long-term growth rates. Although the Company's cash flow forecasts are based on assumptions that are considered reasonable by management and consistent with the plans and estimates management is using to operate the underlying business, there are significant judgments in determining the expected future cash flows attributable to a reporting unit. During the year ended December 31, 2024, the Company recorded $3.7 million of impairment charges related to the Nanofiber reporting unit as a result of the annual impairment review. No impairment charges were recorded during the year ended December 31, 2023. Indefinite lived intangible assets are also subject to annual impairment testing or more frequently if indicators of impairment are identified. Management's judgment and assumptions are required in determining the underlying fair value of the indefinite lived intangible assets. While the Company believes the judgments and assumptions used in determining fair value are reasonable, different assumptions could change the estimated fair values and, therefore, impairment charges could be required, which could be material to the consolidated financial statements. The Company performs a qualitative assessment (step 0) to determine whether it is more likely than not that an intangible asset's fair value is less than its carrying amount. If not, no further impairment testing over the indefinite lived intangible assets is performed. As part of recent acquisitions, the Company acquired Indefinite lived in-process research and development ("IPR&D") intangible assets. These IPR&D assets are not amortized, but are tested for impairment annually, or more frequently when indicators of potential impairment exist, until the completion or abandonment of the associated research and development efforts. Upon completion of the projects, the assets will be amortized over the expected economic life of the asset, which will be determined on that date. Should the project be determined to be abandoned, and if the asset developed has no alternative use, the full value of the asset will be charged to expense.
Revenue Recognition	Revenue Recognition The Company recognizes revenue in accordance with Accounting Standards Codification (ASC) 606, Revenue from Contracts with Customers. Accordingly, revenue is recognized in an amount that reflects the consideration to which the Company expects to be entitled in exchange for promised goods or services when it transfers those goods or services to customers. Sales are shown net of returns, which have not historically been significant. The Company does not generate sales from arrangements with multiple deliverables. The Company generally receives purchase orders from customers on an annual basis in the ordinary course of business. Typically, such purchase orders provide the annual terms, including pricing, related to a particular vehicle model. Purchase orders generally do not specify quantities. The Company recognizes revenue based on the pricing terms included in such annual purchase orders. As part of certain agreements, entered into in the ordinary course of business, the Company is asked to provide customers with annual price reductions. Such amounts are subject to estimate and are accrued as a reduction of revenue as control of the products is transferred to the customer under standard commercial terms. For any shipments of product that may be subject to retroactive price adjustments that are then being negotiated, the Company records revenue based on the Company’s best estimate of the amount of consideration to which the entity will be entitled in exchange for transferring the promised goods to the customer. The Company's best estimate requires significant judgment based on historical results and expected outcomes of ongoing negotiations with customers. The Company's approach is to consider these adjustments to the contract price as variable consideration which is estimated based on the then most likely price amount. In addition, the Company has ongoing adjustments to pricing arrangements with customers based on the related content, the cost of Company products and other commercial factors. Such pricing accruals are adjusted as they are settled with customers.
Advertising and Promotional Materials	Advertising and Promotional Materials All advertising and promotional costs are expensed as incurred
Repairs and Maintenance	Repairs and Maintenance Major renewals and improvements of property and equipment are capitalized, and repairs and maintenance are expensed as incurred.
Self-Insurance	Self-Insurance The Company is self-insured for a portion of its risk on workers’ compensation and employee medical costs. The arrangements provide for stop loss insurance to manage the Company’s risk. Such costs are accrued based on known claims and an estimate of incurred, but not reported ("IBNR") claims. IBNR claims are estimated using historical lag information and other data provided by claims administrators. This estimation process is subjective, and to the extent that future results differ from original estimates, adjustments to recorded accruals may be necessary.
Product Warranty	Product Warranty The Company periodically incurs product warranty costs. Any liabilities associated with product warranty are estimated based on known facts and circumstances and are not significant at December 31, 2024, 2023 and 2022. The Company does not offer extended warranties on its products.
Income Taxes	Income Taxes The provision for income taxes is based on the earnings reported in the consolidated financial statements. Deferred income tax assets and liabilities are computed for differences between the financial statement and tax basis of assets and liabilities that will result in deductible or taxable amounts in the future. Such deferred income tax asset and liability computations are based on enacted tax laws and rates. The Company applies the provisions of ASC 740, Income Taxes, as it relates to uncertainty in income taxes recognized in the Company’s consolidated financial statements. A threshold of more likely than not to be sustained upon examination is applied to uncertain tax positions. The Company deems the estimates related to this provision to be reasonable, however, no assurance can be given that the final outcome of these matters will not vary from what is reflected in the historical income tax provisions and accruals.
Leases	Leases The Company has operating leases for corporate offices, warehouses, vehicles, and other equipment
Earnings Per Share	Earnings Per Share The Company has unvested share-based payment awards with a right to receive non-forfeitable dividends, which are considered participating securities under ASC 260, Earnings Per Share. The Company allocates earnings to participating securities and computes earnings per share using the two-class method. Under the two-class method, net income per share is computed by dividing net income allocated to common shareholders by the weighted average number of common shares outstanding for the period. In applying the two-class method, net income is allocated to both common shares and participating securities based on their respective weighted average shares outstanding for the period.
Comprehensive Income (Loss)	Comprehensive Income (Loss) Comprehensive income (loss) reflects the change in equity of a business enterprise during a period from transactions and other events and circumstances from non-owner sources. For the Company, comprehensive income represents net income adjusted for unrealized gains and losses on available for sale investments and foreign currency translation adjustments
Foreign Currency Translation	Foreign Currency Translation The financial position and results of operations of the Company’s foreign subsidiaries are measured using the local currency as the functional currency. Assets and liabilities are translated at the exchange rate in effect at year-end. Income statement accounts are translated at the average rate of exchange in effect during the year. The resulting translation adjustment is recorded as a separate component of shareholders’ investment. Gains and losses arising from re-measuring foreign currency transactions into the appropriate currency are included in the determination of net income.
Stock-Based Compensation Plans	Stock-Based Compensation Plans The Company accounts for stock-based compensation using the fair value recognition provisions of ASC 718, Compensation - Stock Compensation. As described more fully in Note 5, "Stock-Based Compensation Plans", the Company provides, or has provided, compensation benefits under an omnibus incentive plan, two other stock option plans, another restricted stock plan, and two employee stock purchase plans. The Company utilizes the Black-Scholes model to estimate the value of the stock options, which requires the input of assumptions. These assumptions include estimating (a) the length of time employees will retain their vested stock options before exercising them (“expected term”), (b) the volatility of the Company’s common stock price over the expected term, (c) the number of options that will ultimately not complete their vesting requirements (“forfeitures”) and (d) expected dividends. Changes in the assumptions can materially affect the estimate of fair value of stock-based compensation and consequently, the related amounts recognized on the consolidated statements of operations.
Estimates	Estimates The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.
Reclassifications	Reclassifications Certain prior year amounts have been reclassified to conform to current year presentation.
Recent Accounting Standards	Recent Accounting Standards In November 2023, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update ("ASU") No. 2023-07, Improvements to Reportable Segment Disclosures. This ASU updates reportable segment disclosure requirements by requiring disclosures of significant reportable segment expenses that are regularly provided to the Chief Operating Decision Maker (“CODM”) and included within each reported measure of a segment's profit or loss. This ASU also requires disclosure of the title and position of the individual identified as the CODM and an explanation of how the CODM uses the reported measures of a segment’s profit or loss in assessing segment performance and deciding how to allocate resources. The Company adopted ASU No. 2023-07 during the year ended December 31, 2024. See Note 7 , "Segment Reporting" in the accompanying notes to the consolidated financial statements for further detail. In December 2023, the FASB issued ASU 2023-09, Improvements to Income Tax Disclosures. Under this ASU, public benefit entities must annually “(1) disclose specific categories in the rate reconciliation and (2) provide additional information for reconciling items that meet a quantitative threshold (if the effect of those reconciling items is equal to or greater than 5 percent of the amount computed by multiplying pretax income (or loss) by the applicable statutory income tax rate).” This ASU is effective on a prospective basis for the Company in the fiscal year ending December 31, 2025. This ASU will result in additional disclosures being included in the consolidated financial statements once adopted. In March 2024, the Securities and Exchange Commission ("SEC") issued final climate disclosure rules. The rules require disclosure of climate-related information outside of the audited financial statements and disclosure in the footnotes addressing specified financial statement effects of severe weather events and other natural conditions above certain financial thresholds, certain carbon offsets and renewable energy credits or certificates, if material. Such disclosure requirements were scheduled to begin phasing in for fiscal years beginning on or after January 1, 2025. On April 4, 2024, the SEC exercised its discretion to voluntarily stay the effective date of the final rules pending completion of certain judicial review. The SEC recently signaled that it may not move forward with these rules. The Company continues to evaluate the impact of adopting these rules and to monitor the status of the related legal challenges and position of the SEC with respect to the foregoing. In November 2024, the FASB issued ASU No. 2024-03, "Disaggregation of Income Statement Expenses (Subtopic 220-40)." The ASU requires public entities to disaggregate, in a tabular presentation, certain income statement expenses into different categories, such as purchases of inventory, employee compensation, depreciation, and intangible asset amortization. The guidance is effective for fiscal years beginning after December 15, 2026, with early adoption permitted, and may be applied retrospectively. The Company is currently evaluating the impact of adopting the new ASU on our consolidated financial statements and related disclosures.

SUMMARY OF SIGNIFICANT ACCOUNTING AND REPORTING POLICIES (Policies)

12 Months Ended

Dec. 31, 2024

The consolidated financial statements include the accounts of Gentex Corporation and all of its wholly-owned subsidiaries. All intercompany accounts and transactions have been eliminated.

Cash Equivalents

Cash equivalents consist of funds invested in bank accounts and money market funds that have daily liquidity.

Allowance For Doubtful Accounts

The Company reviews a monthly aging report of all accounts receivable balances starting with invoices outstanding over sixty days. In addition, the Company monitors information about its customers through a variety of sources including the media, and information obtained through ongoing interaction between Company personnel and the customer. Based on the evaluation of the above information, the Company estimates its allowances related to customer receivables on historical credit and collections experience, customers current financial condition and the specific identification of other potential problems, including the economic climate and impact the supply chain constraints has had on specific customers. Actual collections can differ, requiring adjustments to the allowances, but historically such adjustments have not been material.

The Company’s allowance for doubtful accounts primarily relates to financially distressed automotive customers. The Company continues to work with these financially distressed customers in collecting past due balances.

Investments

Available for sale securities

The Company follows the provisions of ASC 820, Fair Value Measurements and Disclosures, for its financial assets and liabilities, and for its non-financial assets and liabilities subject to fair value measurements. ASC 820 provides a framework for measuring the fair value of assets and liabilities. This framework is intended to provide increased consistency in how fair value determinations are made under various existing accounting standards that permit, or in some cases, require estimates of fair-market value. This standard also expanded financial statement disclosure requirements about a company’s use of fair-value measurements, including the effect of such measurement on earnings. The cost of securities sold is based on the specific identification method.

The Company determines the fair value of its government securities, asset-backed securities, corporate bonds, and certain municipal bonds by utilizing monthly valuation statements that are provided by its broker. The broker determines the investment valuation by utilizing the bid price in the market and also refers to third party sources to validate valuations, and as such are classified as Level 2 assets.

The Company's certificates of deposit are classified as available for sale, and are considered as Level 1 assets. These investments are carried at amortized cost, which approximates fair value.

On October 4, 2023, the Company entered into a Stock Purchase Agreement to acquire up to 3,137,500 shares of VOXX International Corporation ("VOXX") Class A Common Stock. The Company agreed to purchase the shares in two tranches: (1) on October 6, 2023, the Company purchased 1,568,750 shares of Class A Common Stock at a price of $10 per share, and (2) on January 5, 2024, the Company purchased 1,568,750 shares of Class A Common Stock at a price of $10 per share. On August 23, 2024, the Company entered into another Stock Purchase Agreement and acquired an additional 3,152,500 shares of Class A Common Stock on that date at $5 per share for investment purposes. The Company has the intention and current ability to hold the VOXX investment, and therefore has recorded the investment within Long-term Investments in the consolidated balance sheet.

As of December 31, 2024, the Company holds a total of 6,463,308 shares of VOXX. The VOXX shares held by the Company are publicly traded and have a readily determinable fair market value and are considered Level 1 assets. Prior to the August 2024 purchases, the investment was accounted for in accordance with ASC 321, Investments - Equity Securities, with changes in fair value recorded in Investment income, net in consolidated statements of income. As a result of the August 2024 purchase, the Company began accounting for the VOXX investment in accordance with ASC 323 – Investments – Equity Method and Joint Venture, with the election to use the Fair Value Option under ASC 825 - Fair Value. As a result of this election, changes in fair value of the shares are recorded in Investment income, net in the consolidated statements of income. The Company recorded $2.4 million of loss during the year ended December 31, 2024 relating to mark to market adjustments in Investment Income, net related to VOXX.

On December 17, 2024, as previously disclosed, the Company entered into a definitive agreement and plan of merger for the Company to acquire shares of VOXX in an all-cash transaction. Under the terms of the agreement, the Company will acquire all the issued and outstanding shares of VOXX common stock not already owned by the Company for a purchase price of $7.50 per share. The transaction is subject to approval of VOXX’s stockholders, certain regulatory approvals and other customary closing conditions, and is expected to close in the first half of 2025.

Technology Investments

The Company also periodically makes strategic investments in the non-marketable debt or equity securities of non-consolidated third parties ("technology investments"). Such technology investments totaled approximately $155.9 million at December 31, 2024, of which $149.9 million and $6.0 million are recorded

in long-term investments and short-term investments on the consolidated balance sheet, and $128.0 million as of December 31, 2023, of which $124.6 million and $3.4 million are recorded in long-term investments and short-term investments on the consolidated balance sheet.

Depending on the form of investment, and the degree of influence the Company has over the investee, the Company primarily accounts for the technology investments in accordance with ASC 321, Investments- Equity Securities or ASC 323 – Investments – Equity Method and Joint Venture. The Company accounts for equity securities in non-controlled affiliates through which the Company exercises significant influence but does not have control over the investee under the equity method, with the Company’s share of the earnings or losses of non-controlled affiliates recognized within Other loss, net in the Company's consolidated statement of income. All other technology investments that the Company holds are primarily accounted for under the measurement alternative of ASC 321. Under the measurement alternative, the carrying value is measured at cost, less any impairment, plus or minus changes resulting from observable price changes in orderly transactions for identical or similar investments of the same issuer.

A summary of the Company’s most significant technology investments is below:

Adasky Ltd. - Adasky is an Israeli based leading developer and manufacturer of intelligent, high-resolution thermal sensing systems for vehicle safety and perception applications and smart city roadway solutions. During 2023, the Company invested approximately $46.5 million in Adasky, which resulted in an approximately 27% ownership stake in Adasky. These investments included approximately $25 million related to preferred shares of Adasky accounted for using the measurement alternative and $21.5 million for common shares of Adasky accounted for using the equity method. As of December 31, 2024 and 2023, the carrying value of the Company’s investments in Adasky was $44.0 million and $45.8 million, respectively.

Green Marbles - GreenMarbles is a provider of sustainable solutions for integration into properties. On June 3, 2022, the Company obtained an approximate 20% equity share in GreenMarbles for $25.0 million, consisting of $20.0 million of cash investment and the issuance of $5.0 million worth of the Company's common stock. The Company accounts for its investment in GreenMarbles using the equity method. As of December 31, 2024 and 2023, the carrying value of the investment in GreenMarbles was $20.8 million and $22.6 million, respectively.

SAAM - SAAM is the maker of HavenGO and a leader in indoor air quality and chemical detection technology, with its development efforts focusing on the design and manufacturing of an advanced mobile indoor air quality monitor. During the years ended December 31, 2024 and 2023, the Company made investments of $2.4 million and $5.0 million in SAAM, respectively. As of December 31, 2024, the Company has an approximately 34% ownership interest in SAAM. The Company accounts for its investment in SAAM using the measurement alternative. As of December 31, 2024 and 2023, the carrying value of the investment in SAAM was $10.3 million and $7.7 million, respectively.

Simplenight - Simplenight provides drivers and vehicle occupants with access to enhanced mobile capability for booking personalized entertainment and lifestyle experiences in addition to everyday purchases. During the years ended December 31, 2024 and 2023, the Company made investments of $7.5 million and $7.5 million in Simplenight, respectively, and as of December 31, 2024, the Company has an approximately 31% ownership interest in Simplenight primarily accounted for using the measurement alternative. As of December 31, 2024 and 2023, the carrying value of the Company’s investments in Simplenight was $29.2 million and $20.9 million, respectively.

Solace Power - Solace Power is a Canada-based company specializing in wireless power solutions. On December 12, 2023, the Company purchased a 13% equity interest in Solace Power, which is accounted for using the measurement alternative. As of both December 31, 2024 and 2023, the carrying value of the Company's investment in Solace Power was $7.1 million.

Retispec - RetiSpec is an artificial intelligence medical imaging company developing a tool for the early detection of disease biomarkers in the eye. During the year ended December 31, 2024, the Company made an additional investment of $2.0 million for an additional 3% equity share in RetiSpec, for a total of

14% ownership interest. The Company also recognized a $3.7 million revaluation gain as part of this additional round of investment, which included new investors in the entity. The Company accounts for RetiSpec using the measurement alternative. As of December 31, 2024 and 2023, the carrying value of the Company's investments in RetiSpec was $10.0 million and $4.2 million, respectively.

The Company utilizes the guidance provided by ASC 326 to determine whether any of the available-for-sale debt securities held by the Company were impaired. No investments were considered to be impaired during the years presented. The Company has the intention and current ability to hold its debt investments until the amortized cost basis has been recovered. If market, industry, and/or investee conditions deteriorate, the Company may incur future impairments.

Fair Value of Financial Instruments

The Company’s financial instruments consist of cash and cash equivalents, investments, accounts receivable, accounts payable, and short and long-term debt. The Company’s estimate of the fair values of these financial instruments approximates their carrying amounts at December 31, 2024 and 2023.

Inventories

Inventories include material, direct labor and manufacturing overhead and are valued at the lower of cost or net realizable value. Cost is determined on a standard cost basis that approximates the first-in, first-out (FIFO) method.Estimated inventory allowances for slow-moving and obsolete inventories are based on current assessments of future demands, market conditions, evaluation of longer lead times for certain electronic components and related management initiatives. If market conditions or customer requirements change and are less favorable than those projected by management, inventory allowances are adjusted accordingly.

Plant and Equipment

Plant and equipment is stated at cost. Depreciation and amortization are computed for financial reporting purposes using the straight-line method, with estimated useful lives of 7 to 30 years for buildings and improvements, and 3 to 10 years for machinery and equipment.

Impairment or Disposal of Long-Lived Assets

The Company reviews long-lived assets, including property, plant and equipment and other intangible assets with definite lives, for impairment whenever events or changes in circumstances indicate that the asset’s carrying amount may not be recoverable. The Company conducts its long-lived asset impairment analysis in accordance with ASC 360-10-15, Impairment or Disposal of Long-Lived Assets. ASC 360-10-15 requires the Company to group assets and liabilities at the lowest level for which identifiable cash flows are largely independent of the cash flows of other assets and liabilities and evaluate the asset group against the sum of the undiscounted future cash flows. If the undiscounted cash flows do not indicate the carrying amount of the asset is recoverable, an impairment charge is measured as the amount by which the carrying amount of the asset group exceeds its fair value based on discounted cash flow analysis or appraisals.

Patents

The Company’s policy is to capitalize costs incurred to obtain patents. The cost of patents is amortized over their useful lives. The cost of patents in process is not amortized until issuance. The Company periodically obtains intellectual property rights, in the ordinary course of business, and the cost of the rights are amortized over their useful lives.

Goodwill and Intangible Assets

Goodwill reflects the cost of an acquisition in excess of the fair values assigned to identifiable net assets acquired. The Company reviews goodwill for impairment during the fourth quarter on an annual basis or more frequently if events or changes in circumstances indicate that goodwill might be impaired. The Company performs an impairment review for each of its reporting units with goodwill, which are Automotive,

Dimmable Aircraft Windows, Nanofiber, Medical, and Biometrics, using either a qualitative approach or quantitative approach which utilizes a fair value method that incorporates certain assumptions and judgments. The fair value of a reporting unit refers to the price that would be received to sell the unit as a whole in an orderly transaction between market participants at the measurement date. The Company performs a qualitative assessment (step 0) to determine whether it is more likely than not that a reporting unit's fair value is less than its carrying amount. If not, no further goodwill impairment testing is performed. If so, the Company performs a step 1 test to determine the fair value of the reporting unit using an income approach to estimate the fair value of each of its reporting units and a market valuation approach to further support this analysis. If the fair value of the reporting unit is greater than its carrying amount, goodwill is not considered to be impaired. However, if the fair value of the reporting unit is less than its carrying amount, an impairment change is recorded as the excess of the reporting unit's carrying value over its fair value.

The assumptions included in the impairment tests require judgment and changes to these inputs could impact the results of the calculations which could result in an impairment charge in future periods if the carrying amount of the reporting unit exceeds its calculated fair value. For the qualitative assessment performed, management considers factors such as macro-economic conditions, industry and market considerations, overall financial performance, and other Company-specific events, amongst other factors, in making the determination as to whether it is more likely than not that a reporting unit's fair value is less than its carrying amount. Other than management's internal projections of future cash flows, the primary assumptions used in the step 1 impairment test is the weighted-average cost of capital and long-term growth rates. Although the Company's cash flow forecasts are based on assumptions that are considered reasonable by management and consistent with the plans and estimates management is using to operate the underlying business, there are significant judgments in determining the expected future cash flows attributable to a reporting unit. During the year ended December 31, 2024, the Company recorded $3.7 million of impairment charges related to the Nanofiber reporting unit as a result of the annual impairment review. No impairment charges were recorded during the year ended December 31, 2023.

Indefinite lived intangible assets are also subject to annual impairment testing or more frequently if indicators of impairment are identified. Management's judgment and assumptions are required in determining the underlying fair value of the indefinite lived intangible assets. While the Company believes the judgments and assumptions used in determining fair value are reasonable, different assumptions could change the estimated fair values and, therefore, impairment charges could be required, which could be material to the consolidated financial statements. The Company performs a qualitative assessment (step 0) to determine whether it is more likely than not that an intangible asset's fair value is less than its carrying amount. If not, no further impairment testing over the indefinite lived intangible assets is performed.

As part of recent acquisitions, the Company acquired Indefinite lived in-process research and development ("IPR&D") intangible assets. These IPR&D assets are not amortized, but are tested for impairment annually, or more frequently when indicators of potential impairment exist, until the completion or abandonment of the associated research and development efforts. Upon completion of the projects, the assets will be amortized over the expected economic life of the asset, which will be determined on that date. Should the project be determined to be abandoned, and if the asset developed has no alternative use, the full value of the asset will be charged to expense.

Revenue Recognition

The Company recognizes revenue in accordance with Accounting Standards Codification (ASC) 606, Revenue from Contracts with Customers. Accordingly, revenue is recognized in an amount that reflects the

consideration to which the Company expects to be entitled in exchange for promised goods or services when it transfers those goods or services to customers. Sales are shown net of returns, which have not historically been significant. The Company does not generate sales from arrangements with multiple deliverables. The Company generally receives purchase orders from customers on an annual basis in the ordinary course of business. Typically, such purchase orders provide the annual terms, including pricing, related to a particular vehicle model. Purchase orders generally do not specify quantities. The Company recognizes revenue based on the pricing terms included in such annual purchase orders.

As part of certain agreements, entered into in the ordinary course of business, the Company is asked to provide customers with annual price reductions. Such amounts are subject to estimate and are accrued as a reduction of revenue as control of the products is transferred to the customer under standard commercial terms. For any shipments of product that may be subject to retroactive price adjustments that are then being negotiated, the Company records revenue based on the Company’s best estimate of the amount of consideration to which the entity will be entitled in exchange for transferring the promised goods to the customer. The Company's best estimate requires significant judgment based on historical results and expected outcomes of ongoing negotiations with customers. The Company's approach is to consider these adjustments to the contract price as variable consideration which is estimated based on the then most likely price amount. In addition, the Company has ongoing adjustments to pricing arrangements with customers based on the related content, the cost of Company products and other commercial factors. Such pricing accruals are adjusted as they are settled with customers.

Advertising and Promotional Materials

All advertising and promotional costs are expensed as incurred

Repairs and Maintenance

Major renewals and improvements of property and equipment are capitalized, and repairs and maintenance are expensed as incurred.

Self-Insurance

The Company is self-insured for a portion of its risk on workers’ compensation and employee medical costs. The arrangements provide for stop loss insurance to manage the Company’s risk. Such costs are accrued based on known claims and an estimate of incurred, but not reported ("IBNR") claims. IBNR claims are estimated using historical lag information and other data provided by claims administrators. This estimation process is subjective, and to the extent that future results differ from original estimates, adjustments to recorded accruals may be necessary.

Product Warranty

The Company periodically incurs product warranty costs. Any liabilities associated with product warranty are estimated based on known facts and circumstances and are not significant at December 31, 2024, 2023 and 2022. The Company does not offer extended warranties on its products.

Income Taxes

The provision for income taxes is based on the earnings reported in the consolidated financial statements. Deferred income tax assets and liabilities are computed for differences between the financial statement and tax basis of assets and liabilities that will result in deductible or taxable amounts in the future. Such deferred income tax asset and liability computations are based on enacted tax laws and rates. The Company applies the provisions of ASC 740, Income Taxes, as it relates to uncertainty in income taxes recognized in the Company’s consolidated financial statements. A threshold of more likely than not to be sustained upon examination is applied to uncertain tax positions. The Company deems the estimates related to this

provision to be reasonable, however, no assurance can be given that the final outcome of these matters will not vary from what is reflected in the historical income tax provisions and accruals.

Leases

The Company has operating leases for corporate offices, warehouses, vehicles, and other equipment

Earnings Per Share

The Company has unvested share-based payment awards with a right to receive non-forfeitable dividends, which are considered participating securities under ASC 260, Earnings Per Share. The Company allocates earnings to participating securities and computes earnings per share using the two-class method. Under the two-class method, net income per share is computed by dividing net income allocated to common shareholders by the weighted average number of common shares outstanding for the period. In applying the two-class method, net income is allocated to both common shares and participating securities based on their respective weighted average shares outstanding for the period.

Comprehensive Income (Loss)

Comprehensive income (loss) reflects the change in equity of a business enterprise during a period from transactions and other events and circumstances from non-owner sources. For the Company, comprehensive income represents net income adjusted for unrealized gains and losses on available for sale investments and foreign currency translation adjustments

Foreign Currency Translation

The financial position and results of operations of the Company’s foreign subsidiaries are measured using the local currency as the functional currency. Assets and liabilities are translated at the exchange rate in effect at year-end. Income statement accounts are translated at the average rate of exchange in effect during the year. The resulting translation adjustment is recorded as a separate component of shareholders’ investment. Gains and losses arising from re-measuring foreign currency transactions into the appropriate currency are included in the determination of net income.

Stock-Based Compensation Plans

The Company accounts for stock-based compensation using the fair value recognition provisions of ASC 718, Compensation - Stock Compensation. As described more fully in Note 5, "Stock-Based Compensation Plans", the Company provides, or has provided, compensation benefits under an omnibus incentive plan, two other stock option plans, another restricted stock plan, and two employee stock purchase plans. The Company utilizes the Black-Scholes model to estimate the value of the stock options, which requires the input of assumptions. These assumptions include estimating (a) the length of time employees will retain their vested stock options before exercising them (“expected term”), (b) the volatility of the Company’s common stock price over the expected term, (c) the number of options that will ultimately not complete their vesting requirements (“forfeitures”) and (d) expected dividends. Changes in the assumptions can materially

affect the estimate of fair value of stock-based compensation and consequently, the related amounts recognized on the consolidated statements of operations.

Estimates

The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

Reclassifications

Certain prior year amounts have been reclassified to conform to current year presentation.

Recent Accounting Standards

In November 2023, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update ("ASU") No. 2023-07, Improvements to Reportable Segment Disclosures. This ASU updates reportable segment disclosure requirements by requiring disclosures of significant reportable segment expenses that are regularly provided to the Chief Operating Decision Maker (“CODM”) and included within each reported measure of a segment's profit or loss. This ASU also requires disclosure of the title and position of the individual identified as the CODM and an explanation of how the CODM uses the reported measures of a segment’s profit or loss in assessing segment performance and deciding how to allocate resources. The Company adopted ASU No. 2023-07 during the year ended December 31, 2024. See Note 7 , "Segment Reporting" in the accompanying notes to the consolidated financial statements for further detail.

In December 2023, the FASB issued ASU 2023-09, Improvements to Income Tax Disclosures. Under this ASU, public benefit entities must annually “(1) disclose specific categories in the rate reconciliation and (2) provide additional information for reconciling items that meet a quantitative threshold (if the effect of those reconciling items is equal to or greater than 5 percent of the amount computed by multiplying pretax income (or loss) by the applicable statutory income tax rate).” This ASU is effective on a prospective basis for the Company in the fiscal year ending December 31, 2025. This ASU will result in additional disclosures being included in the consolidated financial statements once adopted.

In March 2024, the Securities and Exchange Commission ("SEC") issued final climate disclosure rules. The rules require disclosure of climate-related information outside of the audited financial statements and disclosure in the footnotes addressing specified financial statement effects of severe weather events and other natural conditions above certain financial thresholds, certain carbon offsets and renewable energy credits or certificates, if material. Such disclosure requirements were scheduled to begin phasing in for fiscal years beginning on or after January 1, 2025. On April 4, 2024, the SEC exercised its discretion to voluntarily stay the effective date of the final rules pending completion of certain judicial review. The SEC recently signaled that it may not move forward with these rules. The Company continues to evaluate the impact of adopting these rules and to monitor the status of the related legal challenges and position of the SEC with respect to the foregoing.

In November 2024, the FASB issued ASU No. 2024-03, "Disaggregation of Income Statement Expenses (Subtopic 220-40)." The ASU requires public entities to disaggregate, in a tabular presentation, certain income statement expenses into different categories, such as purchases of inventory, employee compensation, depreciation, and intangible asset amortization. The guidance is effective for fiscal years beginning after December 15, 2026, with early adoption permitted, and may be applied retrospectively. The Company is currently evaluating the impact of adopting the new ASU on our consolidated financial statements and related disclosures.