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Note 14 - Certain Relationships and Related Transactions (Details Textual) - USD ($) | 1 Months Ended | 3 Months Ended | 6 Months Ended | 12 Months Ended | 24 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Aug. 31, 2021 | Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022 | Dec. 31, 2014 | Dec. 31, 2014 | Dec. 31, 2022 | Mar. 31, 2022 | Dec. 31, 2021
Net Income (Loss) Attributable to Noncontrolling Interest |  | $ 52,000 | $ 80,000 | $ 174,000 | $ 218,000 |  |  |  |  |
Avalon Med Spa [Member] |  |  |  |  |  |  |  |  |  |
Noncontrolling Interest, Ownership Percentage by Parent |  | 50.10% |  | 50.10% |  |  |  | 50.10% |  |
Investment in Subsidiary [Member] | Management and Accredited Investors [Member] |  |  |  |  |  |  |  |  |  |
Related Party Transaction, Amounts of Transaction |  |  |  |  |  |  | $ 1,000,000.0 |  |  |
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 | $ 3,400,000 |  |  |
Proceeds from Issuance of Private Placement |  |  |  |  |  | $ 3,800,000 |  |  |  |
Equity Method Investment, Ownership Percentage |  | 47.00% |  | 47.00% |  |  |  | 47.00% |  |
Net Income (Loss) Attributable to Noncontrolling Interest |  | $ 34,000,000 | 10,000,000 | $ 103,000,000 | 72,000,000 |  |  |  |  |
Avalon Med Spa [Member] |  |  |  |  |  |  |  |  |  |
Equity Method Investments |  |  |  |  |  |  |  |  |  | $ 359,000
Net Income (Loss) Attributable to Noncontrolling Interest |  | $ 18,000 | $ 70,000 | $ 71,000 | $ 146,000 |  |  |  |  |
Equity Method Investments, Additional |  |  |  |  |  |  |  |  | $ 143,000 |
Avalon Med Spa [Member] | Accredited Investors [Member] |  |  |  |  |  |  |  |  |  |
Proceeds from Issuance of Private Placement | $ 358,000 |  |  |  |  |  |  |  |  |
Equity Method Investments, Additional |  |  |  |  |  |  |  |  | $ 142,000 |

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