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Investments in Joint Ventures - Schedule of Investments in Unconsolidated Joint Ventures (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2026 | Mar. 31, 2025 | Dec. 31, 2025
Schedule of Equity Method Investments [Line Items] |  |  |
Total Assets of The Partnership | $ 750,389 |  | $ 735,145
Profit (Loss) Of the Partnership | (921) | $ 1,634 |
The Company's Share of Profit (Loss) of the Partnership | (2,615) | $ (2,031) |
Total Assets of The Partnership |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Total Assets of The Partnership | 672,203 |  |
Profit (Loss) Of the Partnership | (4,193) |  |
Brooksville Quarry, LLC |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Total Assets of The Partnership | 14,400 |  | 14,404
Profit (Loss) Of the Partnership | (24) |  |
BC FRP Realty, LLC |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Total Assets of The Partnership | 23,738 |  | 23,759
Profit (Loss) Of the Partnership | 144 |  |
Buzzard Point Sponsor, LLC |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Total Assets of The Partnership | 5,356 |  | 5,138
Profit (Loss) Of the Partnership | 0 |  |
Bryant Street Partnerships |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Total Assets of The Partnership | 183,718 |  | 186,189
Profit (Loss) Of the Partnership | (2,176) |  |
Industrial Partnerships |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Total Assets of The Partnership | 119,975 |  | 119,975
Profit (Loss) Of the Partnership | (387) |  |
Lending ventures |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Total Assets of The Partnership | 13,200 |  | 11,318
Profit (Loss) Of the Partnership | 0 |  |
Estero Partnership |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Total Assets of The Partnership | 75,795 |  | 67,484
Profit (Loss) Of the Partnership | 0 |  |
The Verge Partnership |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Total Assets of The Partnership | 120,877 |  | 122,194
Profit (Loss) Of the Partnership | (1,135) |  |
Greenville Partnerships |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Total Assets of The Partnership | 115,144 |  | $ 111,058
Profit (Loss) Of the Partnership | (615) |  |
The Company's Share of Profit (Loss) of the Partnership |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
The Company's Total Investment | 154,144 |  |
The Company's Share of Profit (Loss) of the Partnership | $ (2,615) |  |
Brooksville Quarry, LLC |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
FRP Ownership | 50.00% |  |
The Company's Total Investment | $ 7,517 |  |
The Company's Share of Profit (Loss) of the Partnership | $ (12) |  |
BC FRP Realty, LLC |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
FRP Ownership | 50.00% |  |
The Company's Total Investment | $ 5,103 |  |
The Company's Share of Profit (Loss) of the Partnership | $ 72 |  |
Buzzard Point Sponsor, LLC |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
FRP Ownership | 50.00% |  |
The Company's Total Investment | $ 2,678 |  |
The Company's Share of Profit (Loss) of the Partnership | $ 0 |  |
Bryant Street Partnerships |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
FRP Ownership | 72.10% |  |
The Company's Total Investment | $ 57,873 |  |
The Company's Share of Profit (Loss) of the Partnership | $ (1,693) |  |
Industrial Partnerships |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
FRP Ownership | 9.63% |  |
The Company's Total Investment | $ 8,428 |  |
The Company's Share of Profit (Loss) of the Partnership | (39) |  |
Lending ventures |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
The Company's Total Investment | 16,575 |  |
The Company's Share of Profit (Loss) of the Partnership | $ 0 |  |
Estero Partnership |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
FRP Ownership | 16.00% |  |
The Company's Total Investment | $ 9,371 |  |
The Company's Share of Profit (Loss) of the Partnership | $ 0 |  |
The Verge Partnership |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
FRP Ownership | 61.37% |  |
The Company's Total Investment | $ 33,529 |  |
The Company's Share of Profit (Loss) of the Partnership | $ (697) |  |
Greenville Partnerships |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
FRP Ownership | 58.47% |  |
The Company's Total Investment | $ 13,070 |  |
The Company's Share of Profit (Loss) of the Partnership | $ (246) |  |

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