Investments in unconsolidated joint ventures (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Schedule of Equity Method Investments [Line Items]
Total investments	$ 164,271
Total assets of the partnership	705,673		$ 709,166
Profit (loss) of the partnership	1,335	$ 406
Share of profit (loss) of the partnership	(3,019)	$ (3,625)
Real Estate Total Assets [Member]
Schedule of Equity Method Investments [Line Items]
Total assets of the partnership	533,190		528,344
Profit (loss) of the partnership	(4,733)
Real Estate Partnership Net Income Loss [Member]
Schedule of Equity Method Investments [Line Items]
Share of profit (loss) of the partnership	$ (3,019)
Brooksville Quarry L L C [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage	50.00%
Total investments	$ 7,539
Profit (loss) of the partnership	(24)
Share of profit (loss) of the partnership	(12)
Brooksville Quarry L L C [Member] | Real Estate Total Assets [Member]
Schedule of Equity Method Investments [Line Items]
Total assets of the partnership	$ 14,436		14,439
B C F R P Realty L L C [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage	50.00%
Total investments	$ 5,812
Profit (loss) of the partnership	(72)
Share of profit (loss) of the partnership	(36)
B C F R P Realty L L C [Member] | Real Estate Total Assets [Member]
Schedule of Equity Method Investments [Line Items]
Total assets of the partnership	$ 22,650		22,454
Buzzard Point Sponsor Partnership [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage	50.00%
Total investments	$ 2,391
Profit (loss) of the partnership	0
Share of profit (loss) of the partnership	0
Buzzard Point Sponsor Partnership [Member] | Real Estate Total Assets [Member]
Schedule of Equity Method Investments [Line Items]
Total assets of the partnership	$ 4,782		$ 4,652
Bryant Street Partnerships [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage	72.10%		61.36%
Total investments	$ 70,017
Profit (loss) of the partnership	(2,311)
Share of profit (loss) of the partnership	(1,700)
Bryant Street Partnerships [Member] | Real Estate Total Assets [Member]
Schedule of Equity Method Investments [Line Items]
Total assets of the partnership	201,819		$ 202,634
Lending Ventures [Member]
Schedule of Equity Method Investments [Line Items]
Total investments	30,171
Profit (loss) of the partnership	0
Share of profit (loss) of the partnership	0
Lending Ventures [Member] | Real Estate Total Assets [Member]
Schedule of Equity Method Investments [Line Items]
Total assets of the partnership	$ 19,431		17,117
B B X Partnerships [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage	50.00%
Total investments	$ 1,628
Profit (loss) of the partnership	0
Share of profit (loss) of the partnership
B B X Partnerships [Member] | Real Estate Total Assets [Member]
Schedule of Equity Method Investments [Line Items]
Total assets of the partnership	$ 3,256
Estero Partnership [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage	16.00%
Total investments	$ 3,627
Profit (loss) of the partnership	0
Estero Partnership [Member] | Real Estate Total Assets [Member]
Schedule of Equity Method Investments [Line Items]
Total assets of the partnership	$ 38,529		38,652
Verge [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage	61.37%
Total investments	$ 36,715
Profit (loss) of the partnership	(1,593)
Share of profit (loss) of the partnership	(978)
Verge [Member] | Real Estate Total Assets [Member]
Schedule of Equity Method Investments [Line Items]
Total assets of the partnership	$ 128,640		130,173
Greenville Partnerships [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage	40.00%
Total investments	$ 6,371
Profit (loss) of the partnership	(733)
Share of profit (loss) of the partnership	(293)
Greenville Partnerships [Member] | Real Estate Total Assets [Member]
Schedule of Equity Method Investments [Line Items]
Total assets of the partnership	$ 99,647		$ 98,223