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Note 8 - Goodwill and Intangible Assets - Changes in Carrying Amount of Goodwill (Details) - USD ($)
$ in Thousands
 12 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Balance as of September 30, 2021 $ 23,834  
Balance as of September 30, 2021 12,804  
Impairment (13,162) $ 0
Amortization (2,154) (1,191)
Currency translation, goodwill (554)  
Currency translation (145)  
Balance as of September 30, 2022 10,118 23,834
Balance as of September 30, 2022 10,505 12,804
Hardware [Member]    
Balance as of September 30, 2021 0  
Balance as of September 30, 2021 25  
Impairment 0 0
Amortization (4)  
Currency translation, goodwill 0  
Currency translation 0  
Balance as of September 30, 2022 0 0
Balance as of September 30, 2022 21 25
Software [Member]    
Balance as of September 30, 2021 23,834  
Balance as of September 30, 2021 12,779  
Impairment (13,162)  
Amortization (2,150)  
Currency translation, goodwill (554)  
Currency translation (145)  
Balance as of September 30, 2022 10,118 23,834
Balance as of September 30, 2022 $ 10,484 $ 12,779