Annual report pursuant to Section 13 and 15(d)

Note 1 - Summary of Significant Accounting Policies - Weighted Average Common Shares Outstanding (Details)

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Note 1 - Summary of Significant Accounting Policies - Weighted Average Common Shares Outstanding (Details) - USD ($)
 12 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Net income $ 7,293,066 $ 4,566,156
Weighted average common shares (in shares) 13,643,355 13,442,871
Dilutive potential common shares $ 8,343
Weighted average dilutive common shares outstanding (in shares) 13,643,355 13,451,214
Basic (in dollars per share) $ 0.53 $ 0.34
Diluted (in dollars per share) $ 0.53 $ 0.34