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Note 7 - Property and Equipment, Net - Property and Equipment (Details) - USD ($)
$ in Thousands
Jun. 30, 2022
Sep. 30, 2021
Property and equipment $ 4,813 $ 4,685
Accumulated depreciation (3,169) (2,930)
Property and equipment, net 1,644 1,755
Furniture and Fixtures [Member]    
Property and equipment 1,252 1,261
Machinery and Equipment [Member]    
Property and equipment 1,388 1,270
Leasehold Improvements [Member]    
Property and equipment $ 2,173 $ 2,154