Net Income Per Share (Tables)

12 Months Ended

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