Annual report pursuant to Section 13 and 15(d)

Note 2 - Shareholders' Equity - Restricted Stock Transactions (Details)

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Note 2 - Shareholders' Equity - Restricted Stock Transactions (Details) - Restricted Stock [Member] - $ / shares
12 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Balance, unvested shares (in shares) 109,070 130,440
Balance, weighted-average grant date fair value (in dollars per share) $ 12.98 $ 13.25
Granted (in shares) 39,807 19,455
Granted, weighted-average grant date fair value (in dollars per share) $ 24.20 $ 10.30
Vested (in shares) (35,840) (29,950)
Vested, weighted-average grant date fair value (in dollars per share) $ 12.48 $ 13.36
Forfeited (in shares) (4,198) (10,875)
Forfeited, weighted-average grant date fair value (in dollars per share) $ 15.45 $ 12.14
Balance, unvested shares (in shares) 108,839 109,070
Balance, weighted-average grant date fair value (in dollars per share) $ 17.14 $ 12.98