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Note 14 - Certain Relationships and Related Transactions (Details Textual) - USD ($) | 1 Months Ended | 3 Months Ended | 6 Months Ended | 24 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Mar. 31, 2024 | Aug. 31, 2021 | Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024 | Dec. 31, 2014 | Dec. 31, 2024 | Mar. 31, 2022 | Dec. 31, 2021
Net Income (Loss) Attributable to Noncontrolling Interest |  |  | $ (63,000) | $ (71,000) | $ (250,000) | $ (146,000) |  |  |  |
Avalon Med Spa [Member] |  |  |  |  |  |  |  |  |  |
Noncontrolling Interest, Ownership Percentage by Parent |  |  | 50.10% |  | 50.10% |  |  | 50.10% |  |
Avalon Dermatology, LLC [Member] |  |  |  |  |  |  |  |  |  |
Noncontrolling Interest, Ownership Percentage by Parent | 50.10% |  |  |  |  |  |  |  |  |
Subsidiary, Ownership Percentage, Noncontrolling Owner | 49.90% |  |  |  |  |  |  |  |  |
Payments to Noncontrolling Interests | $ 200,000 |  |  |  |  |  |  |  |  |
Investment in Subsidiary [Member] | Management and Accredited Investors [Member] |  |  |  |  |  |  |  |  |  |
Related Party Transaction, Amounts of Transaction |  |  |  |  |  |  | $ 1,000,000 |  |  |
Investment in Subsidiary [Member] | Outside Director, Accredited Investor [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |
Related Party Transaction, Percentage of Total Investment |  | 10.00% |  |  |  |  |  |  |  |
AWMS Holdings, LLC [Member] |  |  |  |  |  |  |  |  |  |
Equity Method Investments |  |  |  |  |  |  | 3,400,000 |  |  |
Proceeds from Issuance of Private Placement |  |  |  |  |  |  | $ 3,800,000 |  |  |
Equity Method Investment, Ownership Percentage |  |  | 47.00% |  | 47.00% |  |  | 47.00% |  |
Avalon Med Spa [Member] |  |  |  |  |  |  |  |  |  |
Equity Method Investments |  |  |  |  |  |  |  |  |  | $ 400,000
Equity Method Investments, Additional |  |  |  |  |  |  |  |  | $ 100,000 |
Net Income (Loss) Attributable to Noncontrolling Interest |  |  | $ (4,000) | (36,000) | $ (67,000) | (85,000) |  |  |  |
Avalon Med Spa [Member] | Accredited Investors [Member] |  |  |  |  |  |  |  |  |  |
Proceeds from Issuance of Private Placement |  | $ 400,000 |  |  |  |  |  |  |  |
Avalon Dermatology, LLC [Member] |  |  |  |  |  |  |  |  |  |
Net Income (Loss) Attributable to Noncontrolling Interest |  |  | $ (37,000) | $ (24,000) | $ (93,000) | $ (24,000) |  |  |  |

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