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Earnings per Share (Tables) | 9 Months Ended
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Sep. 30, 2022
Earnings Per Share [Abstract] |
Summary of Earnings Per Share |
|  | Three months ended September 30 |  |  | Nine months ended September 30 |
|  | 2022 |  |  | 2021 |  |  | 2022 |  |  | 2021 |
Numerator (in millions): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income available to common stockholders |  | $ | 38.7 |  |  | $ | 23.4 |  |  | $ | 107.5 |  |  | $ | 69.2 |
Denominator (in thousands): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted average common shares outstanding |  |  | 24,786 |  |  |  | 24,643 |  |  |  | 24,794 |  |  |  | 24,624 |
Dilutive effect of stock options and awards |  |  | 179 |  |  |  | 221 |  |  |  | 182 |  |  |  | 248 |
Denominator for diluted earnings per share |  |  | 24,965 |  |  |  | 24,864 |  |  |  | 24,976 |  |  |  | 24,872 |
Net income per share, basic: |  | $ | 1.56 |  |  | $ | 0.95 |  |  | $ | 4.34 |  |  | $ | 2.81 |
Net income per share, diluted: |  | $ | 1.55 |  |  | $ | 0.94 |  |  | $ | 4.30 |  |  | $ | 2.78 |

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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 -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 + Details
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