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Note 5 - Investments in and Advances to Real Estate Joint Ventures (Details Textual) $ in Thousands |  | 3 Months Ended |
--- | --- | --- | ---
Jan. 02, 2024 ft² | Mar. 31, 2024 USD ($) ft² | Mar. 31, 2023 USD ($) ft² | Dec. 31, 2023 USD ($) ft²
Gross Leasable Area (Square Foot) | ft² |  |  | 628 |
Secured Debt |  | $ 351,376 |  | $ 353,945
Prudential Investment Program [Member] | Operating Properties [Member] |  |  |  |
Subsidiary, Ownership Percentage, Parent |  |  | 85.00% |
Real Estate Investments, Net |  |  | $ 150,700 |
Gain (Loss) on Change of Control of Equity Investments |  |  | $ 7,700 |
RPT [Member] |  |  |  |
Number of Properties Acquired | 56 |  |  |
Gross Leasable Area (Square Foot) | ft² | 13,300,000 |  |  |
All Equity Method Investments [Member] |  |  |  |
Number of Real Estate Properties |  | 117 |  | 104
Gross Leasable Area (Square Foot) | ft² |  | 25,000,000 |  | 21,100,000
Other Property Interests [Member] |  |  |  |
Number of Properties Acquired |  | 48 |  |
Acquired Joint Venture 1 [Member] | RPT [Member] |  |  |  |
Joint Ventures, Fair Market Value |  | $ 425,900 |  |
Acquired Joint Venture 2 [Member] | RPT [Member] |  |  |  |
Joint Ventures, Fair Market Value |  | $ 7,400 |  |
Property Net Lease Joint Venture [Member] | RPT [Member] |  |  |  |
Number of Properties Acquired | 49 | 49 |  |
Real Estate Joint Ventures [Member] |  |  |  |
Proceeds from Sale of Real Estate |  | $ 1,800 |  |
Gain (Loss) on Real Estate Joint Venture Disposal |  | 0 |  |
Other Joint Venture Programs [Member] | RPT [Member] |  |  |  |
Secured Debt |  | 66,700 |  |
Fair Value, Option, Changes in Fair Value, Gain (Loss) |  | 14,400 |  |
Second Other Joint Venture Programs [Member] | RPT [Member] |  |  |  |
Secured Debt |  | 187,100 |  |
Fair Value, Option, Changes in Fair Value, Gain (Loss) |  | $ 3,200 |  |

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