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Note 7 - Property and Equipment | 3 Months Ended
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Dec. 31, 2022
Notes to Financial Statements |
Property, Plant and Equipment Disclosure [Text Block] | 7. PROPERTY AND EQUIPMENT, NET Property and equipment, net consisted of the following:
|  | December 31, |  |  | September 30, |
|  | 2022 |  |  | 2022 |
Office furniture and equipment |  | $ | 1,436 |  |  | $ | 1,432 |
Machinery and equipment |  |  | 1,404 |  |  |  | 1,391 |
Leasehold improvements |  |  | 2,302 |  |  |  | 2,172 |
Construction in progress |  |  | - |  |  |  | 104 |
Property and equipment, gross |  |  | 5,142 |  |  |  | 5,099 |
Accumulated depreciation |  |  | (3,387 | ) |  |  | (3,342 | )
Property and equipment, net |  | $ | 1,755 |  |  | $ | 1,757 |
Depreciation and amortization expense for property and equipment was $111 and $96 for the three months ended December 31, 2022 and 2021, respectively.

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