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Note 4 - Investment In and Advances to Real Estate Joint Ventures (Details Textual) a in Thousands | 3 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2023 USD ($) ft² | Dec. 31, 2022 ft² | Mar. 31, 2022 a
Gross Leasable Area (Square Foot) | 628 |  | 66
All Equity Method Investments [Member] |  |  |
Number of Real Estate Properties | 108 | 111 |
Gross Leasable Area (Square Foot) | ft² | 21,900,000 | 22,400,000 |
Real Estate Joint Ventures [Member] | Operating Properties [Member] |  |  |
Real Estate Investments, Net | $ 150.7 |  |
Gain (Loss) on Change of Control of Equity Investments | 7,700,000 |  |
Equity Method Investment, Sales Price | 81,500,000 |  |
Equity Method Investment, Realized Gain (Loss) on Disposal | $ 2,600,000 |  |

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