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Earnings per Share (Tables) | 12 Months Ended
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Dec. 31, 2023
Earnings Per Share [Abstract] |
Summary of Earnings Per Share |
|  | 2023 |  |  | 2022 |  |  | 2021 |
Numerator (in millions): |  |  |  |  |  |  |  |  |
Net income available to common stockholders |  | $ | 139.1 |  |  | $ | 133.0 |  |  | $ | 93.1 |
Denominator (in thousands): |  |  |  |  |  |  |  |  |
Weighted average common shares outstanding |  |  | 24,851 |  |  |  | 24,787 |  |  |  | 24,647 |
Dilutive effect of stock options and awards |  |  | 171 |  |  |  | 195 |  |  |  | 207 |
Denominator for diluted earnings per share |  |  | 25,022 |  |  |  | 24,982 |  |  |  | 24,854 |
Net income per share, basic: |  | $ | 5.60 |  |  | $ | 5.37 |  |  | $ | 3.78 |
Net income per share, diluted: |  | $ | 5.56 |  |  | $ | 5.32 |  |  | $ | 3.75 |

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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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