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Earnings per Share (Tables) | 6 Months Ended
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Jun. 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 June 30, |  |  | Six Months Ended June 30, |
|  | 2025 |  |  | 2024 |  |  | 2025 |  |  | 2024 |
Numerator (in millions): |  |  |  |  |  |  |  |  |  |  |  |
Net income available to common stockholders |  | $ | 23.5 |  |  | $ | 31.2 |  |  | $ | 56.3 |  |  | $ | 72.6 |
Denominator (in thousands): |  |  |  |  |  |  |  |  |  |  |  |
Weighted average common shares outstanding |  |  | 24,937 |  |  |  | 24,937 |  |  |  | 24,954 |  |  |  | 24,918 |
Dilutive effect of stock options and awards |  |  | 105 |  |  |  | 160 |  |  |  | 143 |  |  |  | 173 |
Denominator for diluted earnings per share |  |  | 25,042 |  |  |  | 25,097 |  |  |  | 25,097 |  |  |  | 25,091 |
Net income per share, basic: |  | $ | 0.94 |  |  | $ | 1.25 |  |  | $ | 2.26 |  |  | $ | 2.91 |
Net income per share, diluted: |  | $ | 0.94 |  |  | $ | 1.24 |  |  | $ | 2.24 |  |  | $ | 2.89 |

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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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