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Debt (Tables) | 12 Months Ended
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Dec. 31, 2024
Debt Disclosure [Abstract] |
Schedule of Interest Expense on Teradyne's Senior Notes | The interest expense on Teradyne's senior notes for the years ended December 31, 2024, and December 31, 2023, was as follows:
|  | For the Years Ended |
|  | December 31, 2024 |  |  | December 31, 2023 |
|  | (in thousands) |
Contractual interest expense on the coupon |  | $ | — |  |  | $ | 312 |
Amortization of the issuance fees recognized as interest expense |  |  | — |  |  |  | 113 |
Total interest expense on the convertible debt |  | $ | — |  |  | $ | 425 |

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