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Note 14 - Avenova Asset Divestiture and Bridge Loan (Details Textual) - USD ($) |  | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | --- | ---
Jan. 17, 2025 | Sep. 30, 2025 | Mar. 31, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Nov. 22, 2024 | Nov. 05, 2024
Other expense, net |  | $ (77,000) |  | $ 0 | $ (190,000) | $ (453,000) |  |
Bridge Loan [Member] |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  |  |  | $ 1,000,000
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  |  |  |  | 10.00%
Long-Term Debt, Gross | $ 507,954 |  |  |  |  |  |  |
Bridge Loan [Member] | Tranche One, Bridge Loan [Member] |  |  |  |  |  |  |  |
Debt Instrument, Funded Amount |  |  |  |  |  |  | $ 500,000 |
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | Avenova Assets [Member] |  |  |  |  |  |  |  |
Disposal Group, Including Discontinued Operation, Consideration | 11,500,000 |  |  |  |  |  |  | $ 11,500,000
Escrow Deposit | $ 500,000 |  |  |  |  |  |  |
Escrow, Maximum Period | 6 months |  |  |  |  |  |  |
Disposal Group, Including Discontinued Operation, Consideration, Maximum Post-closing Adjustment | $ 500,000 |  |  |  |  |  |  |
Disposal Group, Including Discontinued Operation, Target Working Capital | 800,000 |  |  |  |  |  |  |
Disposal Group, Net Working Capital Adjustment | $ 365,566 |  |  |  |  |  |  |
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal |  | 0 | $ 10,700,000 | $ 0 | 10,700,000 | $ 0 |  |
Disposal Group, Service and Support Period | 4 months |  |  |  |  |  |  |
Other expense, net |  | $ 0 |  |  | $ 16,000 |  |  |

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- Definition Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -SubTopic 10 -Topic 210 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (b)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481139/470-20-50-4 + Details
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