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Note 4 - Property Acquisitions (Details Textual) - USD ($) $ in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Oct. 31, 2021 | Sep. 30, 2021
Prepaid Rent | $ 17.7 |  |  |
Real Estate Revenue From Acquisitions During Period | 10.3 | $ 0.4 |  |
Jamestown [Member] |  |  |  |
Equity Method Investment, Ownership Percentage |  |  |  | 30.00%
Kim Pru [Member] |  |  |  |
Equity Method Investment, Ownership Percentage |  |  |  | 15.00%
Centro Arlington [Member] |  |  |  |
Equity Method Investment, Ownership Percentage |  |  | 90.00% |
Equity in Income of Joint Ventures, Net [Member] |  |  |  |
Gain (Loss) on Change of Control of Equity Investments | $ 5.0 |  |  |

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