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Note 17 - Net Loss Per Share - Basic and Diluted Loss Per Share (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 9 Months Ended
Jun. 30, 2023
Mar. 31, 2023
Dec. 31, 2022
Jun. 30, 2022
Mar. 31, 2022
Dec. 31, 2021
Jun. 30, 2023
Jun. 30, 2022
Net loss $ (1,423) $ (3,403) $ (3,507) $ (589) $ (492) $ (1,305) $ (8,334) $ (2,386)
Basic and diluted income per share (in dollars per share) $ (0.04)     $ (0.02)     $ (0.23) $ (0.07)
Weighted average shares outstanding - basic (in shares) 37,053,196     36,566,900     36,855,014 36,459,179
Assumed exercise of dilutive options (in shares) 0     0     0 0
Weighted average shares outstanding - diluted (in shares) 37,053,196     36,566,900     36,855,014 36,459,179
Potentially dilutive securities outstanding at period end excluded from diluted computation as the inclusion would have been antidilutive (in shares) 3,742,765     3,440,853     3,742,765 3,440,853
Share-Based Payment Arrangement, Option [Member]                
Potentially dilutive securities outstanding at period end excluded from diluted computation as the inclusion would have been antidilutive (in shares) 3,287,772     2,927,384     3,287,772 2,927,384
Restricted Stock Units (RSUs) [Member]                
Potentially dilutive securities outstanding at period end excluded from diluted computation as the inclusion would have been antidilutive (in shares) 385,429     139,128     385,429 374,341
Obligation to Issue Common Stock [Member]                
Potentially dilutive securities outstanding at period end excluded from diluted computation as the inclusion would have been antidilutive (in shares) 69,564     374,341     69,564 139,128