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v3.22.4

Debt - Additional Information (Detail) $ / shares in Units, $ in Thousands |  |  | 3 Months Ended | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Feb. 23, 2022 USD ($) | Dec. 12, 2016 USD ($) Day $ / shares shares | Dec. 31, 2022 USD ($) $ / shares shares | Dec. 31, 2022 USD ($) $ / shares shares | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($) | Oct. 05, 2022 USD ($) | Jan. 01, 2022 USD ($) | Oct. 03, 2021 $ / shares | May 01, 2020 USD ($)
Debt Instrument |  |  |  |  |  |  |  |  |  |
Repurchase of common stock |  |  |  | $ 752,082 | $ 600,000 | $ 88,465 |  |  |  |
Trading days measurement period | Day |  | 5 |  |  |  |  |  |  |  |
Debt issuance costs, amortization period |  |  |  | 7 years |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  |  |  |  | $ 750,000 |  |  | $ 400,000
Line of Credit Facility, Capacity Available for Specific Purpose Other than for Trade Purchases |  |  | $ 200,000 | $ 200,000 |  |  |  |  |  |
Line of Credit Facility, Interest Rate Description |  |  |  | The interest rate applicable to loans under the Credit Facility are, at Teradyne’s option, equal to either a base rate plus a margin ranging from 0.00% to 0.75% per annum or SOFR plus a margin ranging from 1.10% to 1.85% per annum, based on the consolidated leverage ratio of Teradyne. In addition, Teradyne will pay a commitment fee on the unused portion of the commitments under the Credit Facility ranging from 0.15% to 0.25% per annum, based on the then applicable consolidated leverage ratio. |  |  |  |  |  |
Term of revolving credit facility |  |  |  |  |  |  |  |  |  | 3 years
Debt instrument conversion converted instrument amount |  |  |  |  | 343,000 |  |  |  |  |
Mezzanine equity |  |  | 0 | $ 0 | 1,512 |  |  |  |  |
Expected principal interest payments in next 12 months |  |  | 400 | $ 400 |  |  |  |  |  |
Available Incremental Amount Under The Credit Facility Not To Exceed Percentage Of Consolidated EBIDTA |  |  |  | 15.00% |  |  |  |  |  |
Convertible common shares |  |  |  | $ 66,800 |  |  |  |  |  |
Current debt, Conversion |  |  | 50,115 | 50,115 | 19,182 |  |  |  |  |
Deferred Tax Assets, Other |  |  | 2,520 | 2,520 | 774 |  |  |  |  |
Debt |  |  | 0 | 0 | 89,244 |  |  |  |  |
Retained earnings |  |  | 725,729 | 725,729 | 736,566 |  |  |  |  |
Other Income Expense [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |  |
Gain loss on debt conversion |  |  |  |  | $ 28,800 |  |  |  |  |
Convertible Common Shares [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |  |
Mezzanine equity |  |  | 15,100 | 15,100 |  |  |  |  |  |
Stock Issued During Period, Value, Stock Options Exercised |  |  |  | $ 1,500 |  |  |  |  |  |
Collateral Pledged [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Interest Rate Description |  |  |  | 65 |  |  |  |  |  |
1.25% Convertible Senior Unsecured Notes Due December 15, 2023 |  |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |  |
Aggregate principal amount |  | $ 460,000 | $ 460,000 | $ 460,000 |  |  |  |  |  |
Debt instrument, interest rate, stated percentage |  | 1.25% |  |  |  |  |  |  |  |
Debt instrument, net proceeds after issuance costs |  | $ 450,800 |  |  |  |  |  |  |  |
Payment for net cost of convertible note hedges net of warrant proceeds |  | 33,000 |  | $ 33,000 |  |  |  |  |  |
Repurchase of common stock |  | $ 50,100 |  |  |  |  |  |  |  |
Repurchase of stock, shares | shares |  | 2,000,000 |  |  |  |  |  |  |  |
Senior notes maturity date |  | Dec. 15, 2023 |  |  |  |  |  |  |  |
Debt instrument, frequency of periodic payment |  | payable semiannually in arrears on June 15 and December 15 of each year |  |  |  |  |  |  |  |
Debt instrument, date of first required payment |  | Mar. 31, 2017 |  |  |  |  |  |  |  |
Debt instrument, conversion option expiration date |  | Sep. 15, 2023 |  |  |  |  |  |  |  |
Consecutive trading days measurement period | Day |  | 5 |  |  |  |  |  |  |  |
Debt instrument conversion price | $ / shares |  | $ 31.46 | $ 31.46 | $ 31.46 |  |  |  |  | $ 31.46 |
Shares that would be issued upon conversion | shares |  |  | 1,600,000 | 14,600,000 |  |  |  |  |  |
Strike price per share of warrant | $ / shares |  |  |  | $ 39.48 |  |  |  |  |  |
Debt instrument, convertible, carrying amount of equity component |  |  | $ 100,800 | $ 100,800 |  |  |  |  |  |
Financing cost |  |  | $ 100 | 100 |  |  |  |  |  |
Value of notes converted |  |  |  | $ 139,500 |  |  |  |  |  |
Debt instrument conversion converted instrument amount | $ 424,900 |  |  |  |  |  |  |  |  |
1.25% Convertible Senior Unsecured Notes Due December 15, 2023 | Conversion option one |  |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |  |
Trading days measurement period | Day |  | 20 |  |  |  |  |  |  |  |
Consecutive trading days measurement period | Day |  | 30 |  |  |  |  |  |  |  |
Percentage of conversion price |  | 130.00% |  |  |  |  |  |  |  |
1.25% Convertible Senior Unsecured Notes Due December 15, 2023 | Conversion option two |  |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |  |
Aggregate principal amount |  | $ 1,000 |  |  |  |  |  |  |  |
Percentage of closing sale price of common stock and conversion rate product |  | 98.00% |  |  |  |  |  |  |  |
Revolving Credit Facility | Maximum | Truist Bank [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |  |
Commitment fee percentage of unused portion of credit facility |  |  |  | 0.25% |  |  |  |  |  |
Revolving Credit Facility | Minimum | Truist Bank [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |  |
Commitment fee percentage of unused portion of credit facility |  |  |  | 0.15% |  |  |  |  |  |
Revolving Credit Facility | Base Rate | Maximum | Truist Bank [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |  |
Debt instrument, basis spread on variable rate |  |  |  | 0.75% |  |  |  |  |  |
Revolving Credit Facility | Base Rate | Minimum | Truist Bank [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |  |
Debt instrument, basis spread on variable rate |  |  |  | 0.00% |  |  |  |  |  |
Revolving Credit Facility | London Interbank Offered Rate (LIBOR) | Maximum | Truist Bank [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |  |
Debt instrument, basis spread on variable rate |  |  |  | 1.85% |  |  |  |  |  |
Revolving Credit Facility | London Interbank Offered Rate (LIBOR) | Minimum | Truist Bank [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |  |
Debt instrument, basis spread on variable rate |  |  |  | 1.10% |  |  |  |  |  |
Teradyne [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |  |
Mezzanine equity |  |  |  |  |  |  |  | $ 100,800 |  |
Current debt, Conversion |  |  |  |  |  |  |  | 1,400 |  |
Debt |  |  |  |  |  |  |  | 6,600 |  |
Retained earnings |  |  |  |  |  |  |  | 94,600 |  |
Teradyne [Member] | Accounting Standards Update 2020-06 [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |  |
Deferred Tax Assets, Other |  |  |  |  |  |  |  | 1,800 |  |
Teradyne [Member] | Accounting Standards Update 2020-06 [Member] | Revision of Prior Period, Accounting Standards Update, Adjustment [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |  |
Mezzanine equity |  |  |  |  |  |  |  | $ 0 |  |

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- Definition The value of the financial instrument(s) that the original debt is being converted into in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI https://asc.fasb.org/extlink&oid=126999549&loc=d3e4304-108586 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -URI https://asc.fasb.org/extlink&oid=126999549&loc=d3e4332-108586 + Details
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- Definition Expiration, mandatory redemption, or due date, in YYYY-MM-DD format, of the financial instrument issued in exchange for the original debt being converted in a noncash or part noncash transaction. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI https://asc.fasb.org/extlink&oid=126999549&loc=d3e4304-108586 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -URI https://asc.fasb.org/extlink&oid=126999549&loc=d3e4332-108586 + Details
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- Definition The amount of the original debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI https://asc.fasb.org/extlink&oid=126999549&loc=d3e4304-108586 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -URI https://asc.fasb.org/extlink&oid=126999549&loc=d3e4332-108586 + Details
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- Definition Amount of a favorable spread to a debt holder between the amount of debt being converted and the value of the securities received upon conversion. This is an embedded conversion feature of convertible debt issued that is in-the-money at the commitment date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 8 -URI https://asc.fasb.org/extlink&oid=126973232&loc=d3e21538-112644 + Details
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- Definition The price per share of the conversion feature embedded in the debt instrument. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=123466204&loc=SL6031898-161870 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1B -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611 + Details
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