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Note 1 - Business and Basis of Presentation (Details Textual) | Dec. 31, 2024 USD ($) | May 07, 2024 USD ($) | Nov. 10, 2023 USD ($) | Jun. 28, 2024 | Apr. 27, 2022
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Number of Medical Centers | 10 |  |  |  |
Newco Guadalajara [Member] |  |  |  |  |
Equity Method Investment, Ownership Percentage |  |  |  | 70.00% |
Newco Guadalajara [Member] | HSJ [Member] |  |  |  |  |
Equity Method Investment, Ownership Percentage |  |  |  | 30.00% |
Newco [Member] |  |  |  |  |
Equity Method Investment, Ownership Percentage |  |  |  |  | 85.00%
Newco [Member] | Guadalupe [Member] |  |  |  |  |
Equity Method Investment, Ownership Percentage |  |  |  |  | 15.00%
OR21, LLC [Member] |  |  |  |  |
Equity Method Investment, Ownership Percentage | 50.00% |  |  |  |
OR21, LLC [Member] | Architectural Design Company [Member] |  |  |  |  |
Equity Method Investment, Ownership Percentage | 50.00% |  |  |  |
Southern New England Regional Cancer Center, LLC and Roger Williams Radiation Therapy, LLC [Member] |  |  |  |  |
Number of Medical Centers | 3 |  |  |  |
Business Combination, Consideration Transferred | $ 4,925,000 | $ 5,125,000 | $ 2,850,000 |  |
Business Acquisition, Percentage of Voting Interests Acquired |  |  | 60.00% |  |

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