XML 88 R73.htm IDEA: XBRL DOCUMENT v3.23.3
Note 15 - Share-based Compensation - Stock Option Activity (Details) - $ / shares
 12 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Number of Shares Outstanding, Beginning Balance (in shares) 3,940,899  
Weighted Average Exercise Price, Shares Outstanding, Beginning Balance (in dollars per share) $ 3.31  
Number of Shares Granted (in shares) 1,907,500 1,367,000
Weighted Average Exercise Price, Shares Granted (in dollars per share) $ 2.92  
Number of Shares Forfeited/expired (in shares) 1,891,612  
Weighted Average Exercise Price, Shares Forfeited/expired (in dollars per share) $ 3.86  
Number of Shares Exercised (in shares) 1,052,265  
Weighted Average Exercise Price, Exercised (in dollars per share) $ 1.95  
Number of Shares Outstanding, Ending Balance (in shares) 2,904,522 3,940,899
Weighted Average Exercise Price, Shares Outstanding, Ending Balance (in dollars per share) $ 3.19 $ 3.31
Number of Shares Exercisable (in shares) 842,667  
Weighted Average Exercise Price, Shares Exercisable (in dollars per share) $ 3.51