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Note 7 - Intangible Assets (Details Textual) - USD ($)
$ in Thousands
 12 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Amortization of Intangible Assets $ 982 $ 1,378
Finite-Lived Intangible Asset, Expected Amortization, Year One 734  
Finite-Lived Intangible Asset, Expected Amortization, Year Two 673  
Finite-Lived Intangible Asset, Expected Amortization, Year Three 559  
Finite-Lived Intangible Asset, Expected Amortization, Year Four 559  
Finite-Lived Intangible Assets, Amortization Expense, Year Four and Thereafter $ 1,383