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Earnings per Share (Tables) | 9 Months Ended
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Sep. 30, 2025
Earnings Per Share [Abstract] |
Summary of Earnings Per Share | Diluted earnings per share includes the effect of options that are dilutive and outstanding during the period under the treasury stock method. Per share amounts are computed as follows:
|  | Three Months Ended September 30, |  |  | Nine Months Ended September 30, |
|  | 2025 |  |  | 2024 |  |  | 2025 |  |  | 2024 |
Numerator (in millions): |  |  |  |  |  |  |  |  |  |  |  |
Net income available to common stockholders |  | $ | 12.9 |  |  | $ | 33.4 |  |  | $ | 69.2 |  |  | $ | 106.0 |
Denominator (in thousands): |  |  |  |  |  |  |  |  |  |  |  |
Weighted average common shares outstanding |  |  | 24,834 |  |  |  | 24,941 |  |  |  | 24,914 |  |  |  | 24,926 |
Dilutive effect of stock options and awards |  |  | 75 |  |  |  | 160 |  |  |  | 131 |  |  |  | 177 |
Denominator for diluted earnings per share |  |  | 24,909 |  |  |  | 25,101 |  |  |  | 25,045 |  |  |  | 25,103 |
Net income per share, basic: |  | $ | 0.52 |  |  | $ | 1.34 |  |  | $ | 2.78 |  |  | $ | 4.25 |
Net income per share, diluted: |  | $ | 0.52 |  |  | $ | 1.33 |  |  | $ | 2.76 |  |  | $ | 4.22 |

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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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