Investments in Joint Ventures - Schedule of Investments in Multifamily 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
Buzzard Point Sponsor, LLC
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	4,848	4,652
Total assets	4,848	4,652
Secured notes payable	0	0
Other liabilities	0	0
Capital – FRP	2,424	2,326
Capital – Third Parties	2,424	2,326
Total liabilities and equity	4,848	4,652
Bryant Street Partnerships
Schedule of Equity Method Investments [Line Items]
Investments in real estate, net	185,176	187,616
Cash and restricted cash	5,193	7,543
Unrealized rents & receivables	6,960	6,737
Deferred costs	1,492	738
Total assets	198,821	202,634
Secured notes payable	110,802	107,084
Other liabilities	2,459	3,129
Capital – FRP	64,740	69,779
Capital – Third Parties	20,820	22,642
Total liabilities and equity	198,821	202,634
Estero Partnership
Schedule of Equity Method Investments [Line Items]
Investments in real estate, net	37,495	35,576
Cash and restricted cash	1,025	3,076
Unrealized rents & receivables	0	0
Deferred costs	0	0
Total assets	38,520	38,652
Secured notes payable	16,000	16,000
Other liabilities	0	0
Capital – FRP	3,600	3,600
Capital – Third Parties	18,920	19,052
Total liabilities and equity	38,520	38,652
The Verge Partnership
Schedule of Equity Method Investments [Line Items]
Investments in real estate, net	125,044	128,154
Cash and restricted cash	1,580	1,323
Unrealized rents & receivables	310	403
Deferred costs	169	293
Total assets	127,103	130,173
Secured notes payable	68,178	72,691
Other liabilities	856	1,344
Capital – FRP	35,575	34,391
Capital – Third Parties	22,494	21,747
Total liabilities and equity	127,103	130,173
Greenville Partnerships
Schedule of Equity Method Investments [Line Items]
Investments in real estate, net	97,101	95,911
Cash and restricted cash	3,027	2,000
Unrealized rents & receivables	494	127
Deferred costs	113	185
Total assets	100,735	98,223
Secured notes payable	81,756	66,434
Other liabilities	2,225	3,867
Capital – FRP	5,356	10,450
Capital – Third Parties	11,398	17,472
Total liabilities and equity	100,735	98,223
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