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Net Income Per Common Share (Tables) | 3 Months Ended
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Apr. 03, 2022
Computation of Basic and Diluted Net Income (Loss) Per Common Share | The following table sets forth the computation of basic and diluted net income per common share:
|  | For the Three Months Ended |
|  | April 3, |  |  | April 4, |
|  | 2022 |  |  | 2021 |
|  | (in thousands, except per share amounts) |
Net income for basic and diluted net income per share |  | $ | 161,928 |  |  | $ | 205,512 |
Weighted average common shares-basic |  |  | 162,048 |  |  |  | 166,491 |
Effect of dilutive potential common shares: |  |  |  |  |  |  |  |
Convertible note hedge warrant shares (1) |  |  | 10,028 |  |  |  | 9,429 |
Incremental shares from assumed conversion of convertible notes (2) |  |  | 2,541 |  |  |  | 10,310 |
Restricted stock units |  |  | 875 |  |  |  | 1,395 |
Stock options |  |  | 69 |  |  |  | 108 |
Employee stock purchase plan |  |  | 14 |  |  |  | 7 |
Dilutive potential common shares |  |  | 13,527 |  |  |  | 21,249 |
Weighted average common shares-diluted |  |  | 175,575 |  |  |  | 187,740 |
Net income per common share-basic |  | $ | 1.00 |  |  | $ | 1.23 |
Net income per common share-diluted |  | $ | 0.92 |  |  | $ | 1.09 |
(1) | Convertible notes hedge warrant shares were calculated using the difference between the average Teradyne stock price for the period and the warrant price of $39.54, multiplied by 14.6 million shares. The result of this calculation, representing the total intrinsic value of the warrant, was divided by the average Teradyne stock price for the period.
(2) | Incremental shares from assumed conversion of the convertible notes were calculated using the difference between the average Teradyne stock price for the period and the conversion price of $31.51, multiplied by 3.4 million shares. The result of this calculation, representing the total intrinsic value of the convertible debt, was divided by the average Teradyne stock price for the period.

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 + Details
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