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Note 7 - Property and Equipment, Net | 3 Months Ended
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Dec. 31, 2021
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, |
|  | 2021 |  |  | 2021 |
Office furniture and equipment |  | $ | 1,309 |  |  | $ | 1,261 |
Machinery and equipment |  |  | 1,380 |  |  |  | 1,270 |
Leasehold improvements |  |  | 2,154 |  |  |  | 2,154 |
Property and equipment, gross |  |  | 4,843 |  |  |  | 4,685 |
Accumulated depreciation |  |  | (3,022 | ) |  |  | (2,930 | )
Property and equipment, net |  | $ | 1,821 |  |  | $ | 1,755 |
|  | Three Months Ended |
|  | December 31, |
|  | 2021 |  |  | 2020 |
Depreciation expense |  | $ | 96 |  |  | $ | 99 |

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- Definition The entire disclosure for long-lived, physical asset used in normal conduct of business and not intended for resale. Includes, but is not limited to, work of art, historical treasure, and similar asset classified as collections. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 360 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=120429125&loc=d3e99893-112916 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -URI http://asc.fasb.org/topic&trid=2155823 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 360 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=120429125&loc=SL120174063-112916 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 360 -Section 50 -Paragraph 1 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=120429125&loc=d3e99779-112916 + Details
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