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
Dec. 31, 2020
Dec. 31, 2019
Net income $ 3,163,439 $ 501,158
Weighted average common shares (in shares) 13,692,533 13,512,094
Dilutive potential common shares (in shares) 4,282 110,132
Weighted average dilutive common shares outstanding (in shares) 13,696,815 13,622,226
Basic (in dollars per share) $ 0.23 $ 0.04
Diluted (in dollars per share) $ 0.23 $ 0.04