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Net Income Per Share (Tables) | 12 Months Ended
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Sep. 30, 2022
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 for the fiscal years ended September 30,
|  | 2020 |  |  | 2021 |  |  | 2022 |
Weighted average common shares outstanding used in calculating basic net income per share |  |  | 21,547,665 |  |  |  | 22,010,130 |  |  |  | 21,706,225 |
Effect of dilutive options and non-vested restricted stock awards |  |  | 577,673 |  |  |  | 849,368 |  |  |  | 692,984 |
Weighted average common and common equivalent shares used in calculating diluted net income per share |  |  | 22,125,338 |  |  |  | 22,859,498 |  |  |  | 22,399,209 |

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