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Equity Method Investment | 3 Months Ended
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Mar. 30, 2025
Equity Method Investments and Joint Ventures [Abstract] |
Equity Method Investment | F. EQUITY METHOD INVESTMENT On May 27, 2024, Teradyne paid 483.1 million Euros, equivalent to $524.1 million, to purchase a combination of previously issued and outstanding shares and shares newly issued by Technoprobe, S.p.A. ("Technoprobe"). The shares purchased represent 10% of the issued and outstanding shares of Technoprobe. Teradyne also received a board seat as part of the purchase. Teradyne accounts for this investment using the equity method as a result of being able to exercise significant influence over the operating and financial decisions of Technoprobe. The carrying value of this equity method investment as of March 30, 2025, was $509.6 million in the consolidated balance sheets.
|  | (in thousands) |
Balance at December 31, 2024 |  | $ | 494,494 |
Other comprehensive income related to investment |  |  | 20,716 |
Equity in net earnings of affiliate |  |  | (5,584 | )
Balance at March 30, 2025 |  | $ | 509,626 |
Based on the quoted closing price of Technoprobe stock as of March 30, 2025, the fair value of the publicly traded investment was $411.5 million. Due to the decline in Technoprobe's stock price since the time of investment, Teradyne has evaluated Technoprobe's financial condition and performance, which remains profitable with strong product offerings and a positive forecast, as well as Teradyne's intent and ability to hold the investment. As a result, as of March 30, 2025, there was no other-than-temporary impairment. Teradyne will continue to monitor this investment, the stock price, and macroeconomic factors in order to evaluate the appropriate carrying value of the asset for future reporting periods. Teradyne's equity method basis difference was calculated as the difference between the investment and the amount of underlying equity in net assets acquired. The basis differences, net of tax, will be amortized over the estimated useful lives. Teradyne made an accounting policy election to report its share of Technoprobe's results on a 3-month lag, which is applied consistently from period to period. Teradyne records its share of Technoprobe's net income or loss and the amortization of equity method basis difference, as 'Equity in net earnings of affiliate' in the consolidated statements of operations. Teradyne includes its share of Technoprobe's other comprehensive income and a cumulative translation adjustment in the consolidated statements of comprehensive income.

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- Definition The entire disclosure for equity method investments and joint ventures. Equity method investments are investments that give the investor the ability to exercise significant influence over the operating and financial policies of an investee. Joint ventures are entities owned and operated by a small group of businesses as a separate and specific business or project for the mutual benefit of the members of the group. + References Reference 1: http://www.xbrl.org/2003/role/recommendedDisclosureRef -Topic 740 -SubTopic 323 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478156/740-323-50-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 323 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481687/323-10-50-3 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 323 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481687/323-10-50-3 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Topic 323 -Publisher FASB -URI https://asc.fasb.org/323/tableOfContent + Details
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