Investments in Joint Ventures - Schedule of Investments in Joint Ventures (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Schedule of Equity Method Investments [Line Items]
Total assets	$ 726,918	$ 709,166
Capital – Third Parties	420,884	414,520
Total liabilities and equity	726,918	709,166
Brooksville Quarry, LLC
Schedule of Equity Method Investments [Line Items]
Investments in real estate, net	14,356	14,358
Cash and restricted cash	74	80
Unrealized rents & receivables	0	0
Deferred costs	2	1
Total assets	14,432	14,439
Secured notes payable	0	0
Other liabilities	66	0
Capital – FRP	7,515	7,552
Capital – Third Parties	6,851	6,887
Total liabilities and equity	14,432	14,439
BC FRP Realty, LLC
Schedule of Equity Method Investments [Line Items]
Investments in real estate, net	21,084	21,503
Cash and restricted cash	108	127
Unrealized rents & receivables	451	464
Deferred costs	353	360
Total assets	21,996	22,454
Secured notes payable	10,857	12,086
Other liabilities	283	402
Capital – FRP	5,428	4,983
Capital – Third Parties	5,428	4,983
Total liabilities and equity	21,996	22,454
Lending ventures
Schedule of Equity Method Investments [Line Items]
Investments in real estate, net	16,929	17,117
Cash and restricted cash	0	0
Unrealized rents & receivables	0	0
Deferred costs	0	0
Total assets	16,929	17,117
Secured notes payable	(10,445)	(10,578)
Other liabilities	0	0
Capital – FRP	27,374	27,695
Capital – Third Parties	0	0
Total liabilities and equity	16,929	17,117
Total Multifamily JV’s
Schedule of Equity Method Investments [Line Items]
Investments in real estate, net	444,816	447,257
Cash and restricted cash	10,825	13,942
Unrealized rents & receivables	7,764	7,267
Deferred costs	6,622	5,868
Total assets	470,027	474,334
Secured notes payable	276,736	262,209
Other liabilities	5,540	8,340
Capital – FRP	111,695	120,546
Capital – Third Parties	76,056	83,239
Total liabilities and equity	470,027	474,334
Grand Total
Schedule of Equity Method Investments [Line Items]
Investments in real estate, net	497,185	500,235
Cash and restricted cash	11,007	14,149
Unrealized rents & receivables	8,215	7,731
Deferred costs	6,977	6,229
Total assets	523,384	528,344
Secured notes payable	277,148	263,717
Other liabilities	5,889	8,742
Capital – FRP	152,012	160,776
Capital – Third Parties	88,335	95,109
Total liabilities and equity	$ 523,384	$ 528,344