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Investments in Multifamily Joint Ventures as of December 31, 2022 (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | --- | ---
Schedule of Equity Method Investments [Line Items] |  |  |
Investments in real estate, net | $ 500,235 | $ 493,324 |
Cash and restricted cash | 14,149 | 7,937 |
Unrealized rents & receivables | 7,731 | 5,577 |
Deferred costs | 6,229 | 3,802 |
Total Assets | 709,166 | 701,084 | $ 678,190
Secured notes payable | 263,717 | 276,801 |
Other liabilities | 8,742 | 11,023 |
Capital – Third Parties | 414,520 | 407,145 |
Total Liabilities and Capital | 709,166 | 701,084 |
Real Estate Total Assets [Member] |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Total Assets | 528,344 | 510,640 |
Real Estate Partnership F R P [Member] |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Capital - FRP | 160,776 | 135,333 |
Real Estate Partnership Third Parties [Member] |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Capital – Third Parties | 95,109 | 87,483 |
Real Estate Partnership Total Liabilities And Capital [Member] |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Total Liabilities and Capital | 528,344 | 510,640 |
Buzzard Point Sponsor Partnership [Member] |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Investments in real estate, net | 0 | 0 |
Cash and restricted cash | 0 | 0 |
Unrealized rents & receivables | 0 | 0 |
Deferred costs | 4,652 | 2,906 |
Secured notes payable | 0 | 0 |
Other liabilities | 0 | 0 |
Buzzard Point Sponsor Partnership [Member] | Real Estate Total Assets [Member] |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Total Assets | 4,652 | 2,906 |
Buzzard Point Sponsor Partnership [Member] | Real Estate Partnership F R P [Member] |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Capital - FRP | 2,326 | 1,453 |
Buzzard Point Sponsor Partnership [Member] | Real Estate Partnership Third Parties [Member] |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Capital – Third Parties | 2,326 | 1,453 |
Buzzard Point Sponsor Partnership [Member] | Real Estate Partnership Total Liabilities And Capital [Member] |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Total Liabilities and Capital | 4,652 | 2,906 |
Bryant Street Partnerships [Member] |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Investments in real estate, net | 187,616 | 192,904 |
Cash and restricted cash | 7,543 | 1,349 |
Unrealized rents & receivables | 6,737 | 5,128 |
Deferred costs | 738 | 393 |
Secured notes payable | 107,084 | 129,263 |
Other liabilities | 3,129 | 2,338 |
Bryant Street Partnerships [Member] | Real Estate Total Assets [Member] |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Total Assets | 202,634 | 199,774 |
Bryant Street Partnerships [Member] | Real Estate Partnership F R P [Member] |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Capital - FRP | 69,779 | 53,553 |
Bryant Street Partnerships [Member] | Real Estate Partnership Third Parties [Member] |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Capital – Third Parties | 22,642 | 14,620 |
Bryant Street Partnerships [Member] | Real Estate Partnership Total Liabilities And Capital [Member] |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Total Liabilities and Capital | 202,634 | 199,774 |
Estero Partnership [Member] |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Investments in real estate, net | 35,576 | 33,008 |
Cash and restricted cash | 3,076 | 5,497 |
Unrealized rents & receivables | 0 | 0 |
Deferred costs | 0 | 0 |
Secured notes payable | 16,000 | 16,000 |
Other liabilities | 0 | 5 |
Estero Partnership [Member] | Real Estate Total Assets [Member] |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Total Assets | 38,652 | 38,505 |
Estero Partnership [Member] | Real Estate Partnership F R P [Member] |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Capital - FRP | 3,600 | 3,600 |
Estero Partnership [Member] | Real Estate Partnership Third Parties [Member] |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Capital – Third Parties | 19,052 | 18,900 |
Estero Partnership [Member] | Real Estate Partnership Total Liabilities And Capital [Member] |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Total Liabilities and Capital | 38,652 | 38,505 |
Verge [Member] |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Investments in real estate, net | 128,154 | 130,616 |
Cash and restricted cash | 1,323 | 359 |
Unrealized rents & receivables | 403 | 14 |
Deferred costs | 293 | 139 |
Secured notes payable | 72,691 | 66,584 |
Other liabilities | 1,344 | 5,328 |
Verge [Member] | Real Estate Total Assets [Member] |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Total Assets | 130,173 | 131,128 |
Verge [Member] | Real Estate Partnership F R P [Member] |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Capital - FRP | 34,391 | 36,348 |
Verge [Member] | Real Estate Partnership Third Parties [Member] |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Capital – Third Parties | 21,747 | 22,868 |
Verge [Member] | Real Estate Partnership Total Liabilities And Capital [Member] |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Total Liabilities and Capital | 130,173 | 131,128 |
Greenville Partnerships [Member] |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Investments in real estate, net | 95,911 | 95,883 |
Cash and restricted cash | 2,000 | 567 |
Unrealized rents & receivables | 127 | 13 |
Deferred costs | 185 | 88 |
Secured notes payable | 66,434 | 64,954 |
Other liabilities | 3,867 | 3,014 |
Greenville Partnerships [Member] | Real Estate Total Assets [Member] |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Total Assets | 98,223 | 96,551 |
Greenville Partnerships [Member] | Real Estate Partnership F R P [Member] |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Capital - FRP | 10,450 | 11,087 |
Greenville Partnerships [Member] | Real Estate Partnership Third Parties [Member] |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Capital – Third Parties | 17,472 | 17,496 |
Greenville Partnerships [Member] | Real Estate Partnership Total Liabilities And Capital [Member] |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Total Liabilities and Capital | 98,223 | 96,551 |
Multifamily J V [Member] |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Investments in real estate, net | 447,257 | 452,411 |
Cash and restricted cash | 13,942 | 7,772 |
Unrealized rents & receivables | 7,267 | 5,155 |
Deferred costs | 5,868 | 3,526 |
Secured notes payable | 262,209 | 276,801 |
Other liabilities | 8,340 | 10,685 |
Multifamily J V [Member] | Real Estate Total Assets [Member] |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Total Assets | 474,334 | 468,864 |
Multifamily J V [Member] | Real Estate Partnership F R P [Member] |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Capital - FRP | 120,546 | 106,041 |
Multifamily J V [Member] | Real Estate Partnership Third Parties [Member] |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Capital – Third Parties | 83,239 | 75,337 |
Multifamily J V [Member] | Real Estate Partnership Total Liabilities And Capital [Member] |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Total Liabilities and Capital | $ 474,334 | $ 468,864 |

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