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, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Net income $ 6,098,113 $ 2,994,568 $ 12,901,336 $ 4,243,623
Weighted average common shares (in shares) 13,732,913 13,497,955 13,718,394 13,510,413
Dilutive potential common shares (in shares) 79,597 0 44,503 36,711
Weighted average dilutive common shares outstanding (in shares) 13,812,510 13,497,955 13,762,897 13,547,124
Basic (in dollars per share) $ 0.44 $ 0.22 $ 0.94 $ 0.31
Diluted (in dollars per share) $ 0.44 $ 0.22 $ 0.94 $ 0.31