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Note 16 - Stockholders' Equity (Tables)
6 Months Ended
Mar. 31, 2023
Notes Tables  
Schedule of Stockholders Equity [Table Text Block]
                                   

Accumulated

         
   

Common Stock

   

Additional

           

Other

   

Total

 
   

Shares

   

Par Value

Amount

   

Paid-in

Capital

   

Accumulated

Deficit

   

Comprehensive

Loss

   

Stockholders'

Equity

 

Balance as of September 30, 2022

    36,611,240     $ 366     $ 108,551     $ (57,366 )   $ (792 )   $ 50,393  

Share-based compensation expense

    -       -       420       -       -       420  

Issuance of common stock upon exercise of stock options, net

    20,000       -       32       -       -       32  

Issuance of common stock upon vesting of restricted stock units

    12,667       -       -       -       -       -  

Release of obligation to issue commons stock

    69,564       1       -       -               -  

Accumulated other comprehensive loss

    -       -       -       -       266       266  

Net loss

    -       -       -       (3,507 )             (3,507 )

Balance as of December 31, 2022

    36,713,471     $ 367     $ 109,003     $ (60,873 )   $ (526 )   $ 47,604  
                                                 

Share-based compensation expense

    -       -       513       -       -       513  

Issuance of common stock upon exercise of stock options, net

    33,765       1       54       -       -       54  

Issuance of common stock upon cashless exercise of stock options, net

    15,914       -       -       -       -       -  

Issuance of common stock upon vesting of restricted stock units

    232,761       2       (2 )     -       -       (2 )

Shares retained for payment of taxes in connection with net share settlement of restricted stock units

    (11,616 )     -       (45 )     -       -       (45 )

Accumulated other comprehensive loss

    -       -       -       -       81       81  

Net loss

    -       -       -       (3,403 )     -       (3,403 )

Balance as of March 31, 2023

    36,984,295     $ 370     $ 109,523     $ (64,276 )   $ (445 )   $ 44,802  
   

Common Stock

   

Additional

           

Other

   

Total

 
   

Shares

   

Par Value

Amount

   

Paid-in

Capital

   

Accumulated

Deficit

   

Comprehensive

Loss

   

Stockholders'

Equity

 

Balance as of September 30, 2021

    36,403,833     $ 364     $ 107,110     $ (41,154 )   $ 2     $ 65,958  

Share-based compensation expense

    -       -       558       -       -       558  

Issuance of common stock upon exercise of stock options, net

    15,000       -       46       -       -       46  

Stock buyback

    (116,868 )     (1 )     (441 )     -       -       (441 )

Release of obligation to issue commons stock

    69,564       -       -       -       -       -  

Accumulated other comprehensive loss

    -       -       -       -       (85 )     (85 )

Net loss

    -       -       -       (1,305 )     -       (1,305 )

Balance as of December 31, 2021

    36,371,529       363     $ 107,273     $ (42,459 )   $ (83 )   $ 64,731  
                                                 

Share-based compensation expense

    -       -       737       -       -       737  

Issuance of common stock upon exercise of stock options, net

    55,000       1       124       -       -       124  

Issuance of common stock upon vesting of restricted stock units

    262,342       2       -       -       -       -  

Shares retained for payment of taxes in connection with net share settlement of restricted stock units

    (18,344 )     -       (70 )     -       -       (70 )

Stock buyback

    (142,442 )     (1 )     (557 )     -       -       (557 )

Accumulated other comprehensive loss

    -       -       -       -       (1 )     (1 )

Net loss

    -       -       -       (492 )     -       (492 )

Balance as of March 31, 2022

    36,528,085       365     $ 107,507     $ (42,951 )   $ (84 )   $ 64,472