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Note 5 - Intangible Assets (Details Textual) - USD ($)
$ in Thousands
3 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Amortization of Intangible Assets $ 342 $ 401
Finite-Lived Intangible Asset, Expected Amortization, Remainder of Fiscal Year 1,016  
Finite-Lived Intangible Asset, Expected Amortization, Year One 1,015  
Finite-Lived Intangible Asset, Expected Amortization, Year Two 725  
Finite-Lived Intangible Asset, Expected Amortization, Year Three 668  
Finite-Lived Intangible Asset, Expected Amortization, Year Four 555  
Finite-Lived Intangible Asset, Expected Amortization, Year Five $ 1,948