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Net Income Per Share (Tables) | 9 Months Ended
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Jun. 30, 2023
Earnings Per Share [Abstract] |
Basic and Diluted Net Income Per Share | The following table presents shares used in the calculation of basic and diluted net income per share:
| Three Months Ended |  |  | Nine Months Ended |
| June 30, |  |  | June 30, |
| 2022 |  |  | 2023 |  |  | 2022 |  |  | 2023 |
Weighted average common shares outstanding used in calculating basic net income per share |  | 21,524,315 |  |  |  | 21,885,400 |  |  |  | 21,761,811 |  |  |  | 21,831,350 |
Effect of dilutive options and non-vested restricted stock awards |  | 648,958 |  |  |  | 542,043 |  |  |  | 694,017 |  |  |  | 489,919 |
Weighted average common and common equivalent shares used in calculating diluted net income per share |  | 22,173,273 |  |  |  | 22,427,443 |  |  |  | 22,455,828 |  |  |  | 22,321,269 |

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- Definition Tabular disclosure of the weighted average number of shares used in calculating basic net earnings per share (or unit) and diluted earnings per share (or unit). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482662/260-10-50-1 + Details
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