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Note 8 - Goodwill and Intangible Assets - Changes in Carrying Amount of Goodwill (Details) - USD ($)
$ in Thousands
 3 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Balance $ 10,118  
Balance, intangible assets 10,505  
Currency translation 190  
Amortization, intangible assets (532) $ (543)
Balance 10,308  
Currency translation, intangible assets 31  
Balance, intangible assets 10,004  
Hardware [Member]    
Balance 0  
Balance, intangible assets 21  
Currency translation 0  
Amortization, intangible assets (1)  
Balance 0  
Currency translation, intangible assets 0  
Balance, intangible assets 20  
Software [Member]    
Balance 10,118  
Balance, intangible assets 10,484  
Currency translation 190  
Amortization, intangible assets (531)  
Balance 10,308  
Currency translation, intangible assets 31  
Balance, intangible assets $ 9,984