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Net Income Per Common Share | 9 Months Ended
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Sep. 30, 2025
Earnings Per Share [Abstract] |
Net Income Per Common Share | Net Income Per Common Share Basic net income per common share is computed by dividing net income by the weighted average number of common shares outstanding during the period. Diluted net income per common share is computed by dividing net income by the combination of the weighted average number of common shares outstanding during the period and other potentially dilutive weighted average common shares. Other potentially dilutive weighted average common shares include the dilutive effect of restricted stock units and performance stock units for each period using the treasury stock method. Under the treasury stock method, the amount of compensation expense, if any, for future service that has not yet been recognized is assumed to be used to repurchase shares in the current period. The following table sets forth the computation of basic and diluted net income per common share:
| Three Months Ended September 30 |  | Nine Months Ended September 30
| 2025 |  | 2024 |  | 2025 |  | 2024
| (thousands, except per-share data)
Net income | $ | 21,769 |  |  | $ | 91,038 |  |  | $ | 124,102 |  |  | $ | 307,454 |
Weighted average common shares outstanding during the period (for basic calculation) | 37,385 |  |  | 38,848 |  |  | 37,692 |  |  | 39,286 |
Dilutive effect of other potential common shares | 124 |  |  | 215 |  |  | 136 |  |  | 235 |
Weighted average common shares and potential common shares (for diluted calculation) | 37,509 |  |  | 39,063 |  |  | 37,828 |  |  | 39,521 |
Net income per common share - Basic | $ | 0.58 |  |  | $ | 2.34 |  |  | $ | 3.29 |  |  | $ | 7.83 |
Net income per common share - Diluted | $ | 0.58 |  |  | $ | 2.33 |  |  | $ | 3.28 |  |  | $ | 7.78 |
The computation of the dilutive effect of other potential common shares excludes stock awards representing 0.1 million shares of common stock and an insignificant number of shares of common stock, respectively, in the three months ended September 30, 2025 and 2024, and 0.1 million shares of common stock in both the nine months ended September 30, 2025 and 2024. Under the treasury stock method, the inclusion of these stock awards would have been antidilutive.

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482662/260-10-50-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/260/tableOfContent Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482662/260-10-50-2 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482662/260-10-50-3 + Details
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