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Earnings per Share (Tables) | 12 Months Ended
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Sep. 30, 2023
Earnings Per Share [Abstract] |
Schedule of Calculation of Numerator and Denominator in Earnings Per Share | The following is a reconciliation of the numerator and denominator of the diluted net income per share computations for the periods presented below.
| Year Ended September 30,
(in millions, except share amounts) | 2023 |  | 2022 |  | 2021
Numerator: |  |  |  |  |
Net income | $ | 238.5 |  |  | $ | 207.1 |  |  | $ | 116.3 |
Less: Allocation to participating securities | (8.1) |  |  | (6.1) |  |  | (3.5) |
Net income allocated to common stockholders | $ | 230.4 |  |  | $ | 201.0 |  |  | $ | 112.8 |
Denominator: |  |  |  |  |
Weighted average number of: |  |  |  |  |
Common shares outstanding | 19,957,333 |  |  | 19,570,403 |  |  | 19,130,643 |
Dilutive potential common shares outstanding: |  |  |  |  |
Share-based awards | 662,007 |  |  | 497,137 |  |  | 547,525 |
Diluted shares outstanding | 20,619,340 |  |  | 20,067,540 |  |  | 19,678,168 |
Earnings per share - basic | $ | 11.55 |  |  | $ | 10.27 |  |  | $ | 5.90 |
Earnings per share - diluted | $ | 11.18 |  |  | $ | 10.01 |  |  | $ | 5.74 |
The following table presents unaudited proforma earnings per share on a post-split basis for the periods indicated.
| Year Ended September 30,
(in millions, except share amounts) | 2023 |  | 2022 |  | 2021
| (Unaudited)
Numerator: |  |  |  |  |
Net income allocated to common stockholders, as reported | $ | 230.4 |  |  | $ | 201.0 |  |  | $ | 112.8 |
Proforma Denominator (with effect of stock split): |  |  |  |  |
Weighted average number of: |  |  |  |  |
Common shares outstanding | 29,936,000 |  |  | 29,355,605 |  |  | 28,695,965 |
Dilutive potential common shares outstanding: |  |  |  |  |
Share-based awards | 993,011 |  |  | 745,706 |  |  | 821,288 |
Proforma diluted shares outstanding | 30,929,011 |  |  | 30,101,311 |  |  | 29,517,253 |
Proforma earnings per share - basic | $ | 7.71 |  |  | $ | 6.85 |  |  | $ | 3.93 |
Proforma earnings per share - diluted | $ | 7.45 |  |  | $ | 6.67 |  |  | $ | 3.82 |

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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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