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Accounting Policies - Additional Information (Detail) - USD ($) $ in Thousands |  | 12 Months Ended
--- | --- | ---
Jan. 01, 2022 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Retained earnings |  | $ 706,514 | $ 725,729 |
Standard warranty period |  | 12 months |  |
Depreciation over life to cost of revenues and selling and administrative expenses, years |  | 6 years |  |
Net book value of internally manufactured test systems sold |  | $ 2,800 | 6,600 | $ 16,600
Advertising costs |  | 15,500 | 17,300 | 13,400
Losses (gains) on foreign currency transactions |  | 10,900 | 10,800 | $ (2,100)
Trade Accounts Receivable |  | 243,500 | 93,900 |
Retained earnings | $ 1,800 |  |  |
Additional paid-in capital |  | $ 1,827,274 | $ 1,755,963 |
Teradyne [Member] |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Retained earnings | 94,600 |  |  |
Current debt | 1,400 |  |  |
Debt | 6,600 |  |  |
Mezzanine equity | 100,800 |  |  |
Additional paid-in capital | 100,800 |  |  |
Teradyne [Member] | Accounting Standards Update 2020-06 [Member] | Revision of Prior Period, Accounting Standards Update, Adjustment [Member] |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Mezzanine equity | $ 0 |  |  |

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