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Note 9 - Net Income (Loss) Per Share Attributable to Common Shareholders (Tables) | 3 Months Ended
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Dec. 31, 2022
Notes Tables |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
|  | Three Months Ended December 31, |
(in thousands, except per share data) |  | 2022 |  |  | 2021 |
Numerator: |  |  |  |  |  |  |  |
Net income (loss) - basic earnings per share |  | $ | (80 | ) |  | $ | 1,872 |
Effect on dilutive securities: |  |  |  |  |  |  |  |
Change in fair value of in-the-money warrant derivative liabilities |  |  | (2 | ) |  |  | (1,247 | )
Net income (loss) applicable to common shareholders – diluted earnings per share |  | $ | (82 | ) |  | $ | 625 |
Denominator: |  |  |  |  |  |  |  |
Weighted-average shares outstanding for basic earnings per share |  |  | 10,417,609 |  |  |  | 10,189,012 |
Effect on dilutive securities: |  |  |  |  |  |  |  |
Options |  |  | - |  |  |  | 242,699 |
Warrants |  |  | 13,213 |  |  |  | 155,017 |
Preferred Stock |  |  | - |  |  |  | 38,889 |
Weighted-average shares outstanding for diluted earnings per share |  |  | 10,430,822 |  |  |  | 10,625,617 |
Basic net income (loss) per share |  | $ | (0.01 | ) |  | $ | 0.18 |
Diluted net income (loss) per share |  | $ | (0.01 | ) |  | $ | 0.06 |
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] |
|  | As of December 31, |
|  | 2022 |  |  | 2021 |
Stock options |  |  | 1,192,094 |  |  |  | 244,348 |
Warrants |  |  | 1,744,416 |  |  |  | 976,520 |
Convertible preferred stock |  |  | 38,889 |  |  |  | - |

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- Definition Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 + Details
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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 + Details
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