Quarterly report pursuant to Section 13 or 15(d)

Note 2 - Net Income Per Share - Weighted Average Common Shares Outstanding (Details)

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Note 2 - Net Income Per Share - Weighted Average Common Shares Outstanding (Details) - USD ($)
 3 Months Ended 9 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Net income $ 2,994,568 $ 1,300,527 $ 4,243,623 $ 2,678,429
Weighted average common shares (in shares) 13,497,955 13,446,289 13,510,413 13,422,885
Dilutive potential common shares (in shares) 0 5,382 36,711 11,124
Weighted average dilutive common shares outstanding (in shares) 13,497,955 13,451,671 13,547,124 13,434,009
Basic (in dollars per share) $ 0.22 $ 0.10 $ 0.31 $ 0.20
Diluted (in dollars per share) $ 0.22 $ 0.10 $ 0.31 $ 0.20