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Earnings Per Share | 12 Months Ended
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Dec. 31, 2022
Earnings Per Share [Abstract] |
Earnings Per Share | 10. Earnings Per Share The following table sets forth the computations of basic and diluted earnings per share:
| Year ended December 31,
| 2022 |  | 2021 |  | 2020
Net income | $ | 899,101 |  | $ | 652,984 |  | $ | 355,766
Shares: |  |  |  |  |  |  |  |
Weighted-average number of common shares outstanding (for basic calculation) |  | 27,851 |  |  | 28,132 |  |  | 27,917
Dilutive stock awards |  | 211 |  |  | 379 |  |  | 499
Weighted-average number of common shares outstanding (for diluted calculation) |  | 28,062 |  |  | 28,511 |  |  | 28,416
Basic earnings per share | $ | 32.28 |  | $ | 23.21 |  | $ | 12.74
Diluted earnings per share | $ | 32.04 |  | $ | 22.90 |  | $ | 12.52
The following stock awards were excluded from the calculation of diluted earnings per share:
| Year ended December 31,
| 2022 |  | 2021 |  | 2020
Stock awards subject to performance conditions |  | 54 |  |  | 66 |  |  | 87
Stock awards that were antidilutive |  | 163 |  |  | 34 |  |  | 57
Total stock awards excluded from diluted earnings per share |  | 217 |  |  | 100 |  |  | 144

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