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Note 4 - Real Estate (Details Textual) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2024 | Mar. 31, 2023 | Dec. 31, 2023
Financing Receivable, Face Amount | $ 175.4 |  | $ 25.0
Discontinued Operation, Gain (Loss) from Disposal of Discontinued Operation, Net of Tax, Attributable to Noncontrolling Interest |  | $ 1.5 |
Discontinued Operation, Tax Effect of Gain (Loss) from Disposal of Discontinued Operation |  | 1.2 |
Property [Member] |  |  |
Tangible Asset Impairment Charges | $ 3.7 |  |
Previously Held Equity Investments [Member] |  |  |
Gain (Loss) on Change of Control of Equity Investments |  | $ 7.7 |
Equity Method Investment, Ownership Percentage |  | 15.00% |
Preferred Equity Investments [Member] | Admore PA Property [Member] |  |  |
Equity Method Investment, Aggregate Cost |  |  | $ 19.6

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