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Note 17 - Net (Loss) Income Per Share - Basic and Diluted Loss Per Share (Details) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Net (loss) income $ (16,212) $ 704
Basic (in dollars per share) $ (0.44) $ 0.02
Diluted (in dollars per share) $ (0.44) $ 0.02
Weighted average shares outstanding - basic (in shares) 36,495,012 34,409,478
Assumed exercise of dilutive options (in shares) 0 1,179,670
Diluted (in shares) 36,495,012 35,589,148
Options (in shares) 4,423,202 1,243,692
Share-Based Payment Arrangement, Option [Member]    
Options (in shares) 3,940,899 1,035,000
Restricted Stock Units (RSUs) [Member]    
Options (in shares) 343,175 208,692
Obligation to Issue Common Stock [Member]    
Options (in shares) 139,128 0