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Earnings per share (Tables) | 12 Months Ended
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Dec. 31, 2023
Earnings Per Share [Abstract] |
Schedule of Earnings Per Share, Basic and Diluted | A reconciliation of the numerators and the denominators of the basic and diluted earnings per share computations is as follows (in thousands, except per share amounts):
|  | Twelve Months Ended December 31,
|  | 2023 |  | 2022 |  | 2021
Numerator |  |  |  |  |  |
Net income |  | $ | 281,594 |  |  | $ | 202,129 |  |  | $ | 402,710 |
Denominator |  |  |  |  |  |
Weighted average common shares outstanding for basic earnings per share |  | 131,927 |  |  | 136,844 |  |  | 140,646 |
Dilutive potential common stock outstanding |  |  |  |  |  |
Stock options |  | 1,824 |  |  | 2,265 |  |  | 2,737 |
RSUs, PSUs and ESPP |  | 388 |  |  | 422 |  |  | 555 |
Convertible Notes |  | 58 |  |  | 1,077 |  |  | 2,858 |
Weighted average common shares outstanding for diluted earnings per share |  | 134,197 |  |  | 140,608 |  |  | 146,796 |
Earnings per share |  |  |  |  |  |
Basic |  | $ | 2.13 |  |  | $ | 1.48 |  |  | $ | 2.86 |
Diluted |  | $ | 2.10 |  |  | $ | 1.44 |  |  | $ | 2.74 |
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share | Shares which have been excluded from the calculation of diluted earnings per common share because their effect was anti-dilutive, include the following (shares in millions):
|  | Twelve Months Ended December 31,
|  | 2023 |  | 2022 |  | 2021
Anti-dilutive securities (1) |  | 27.8 |  |  | 20.7 |  |  | 13.8 |
(1) The anti-dilutive securities include outstanding stock options, unvested RSUs, unvested PSUs, common shares expected to be issued under our ESPP and Convertible Notes.

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- Definition Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482662/260-10-50-1 + Details
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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 -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482662/260-10-50-1 + Details
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