Mortgages and Other Notes Payable - Schedule of Debt (Details) - USD ($) $ in Thousands	Feb. 08, 2024	Dec. 31, 2023	Feb. 28, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Mortgages and other notes payable		$ 182,683		$ 188,004
770 South Post Oak
Debt Instrument [Line Items]
Mortgages and other notes payable		$ 11,187		11,406
Interest Rate		4.40%
Athens
Debt Instrument [Line Items]
Mortgages and other notes payable		$ 0		1,155
Interest Rate		4.00%
Blue Lake Villas
Debt Instrument [Line Items]
Mortgages and other notes payable		$ 9,503		9,673
Interest Rate		3.15%
Blue Lake Villas Phase II
Debt Instrument [Line Items]
Mortgages and other notes payable		$ 3,349		3,424
Interest Rate		2.85%
Chelsea
Debt Instrument [Line Items]
Mortgages and other notes payable		$ 8,064		7,875
Interest Rate		3.40%
EQK Portage
Debt Instrument [Line Items]
Mortgages and other notes payable		$ 3,350		3,350
Interest Rate		10.00%
Forest Grove
Debt Instrument [Line Items]
Mortgages and other notes payable		$ 6,988		7,128
Interest Rate		3.75%
Landing on Bayou Cane
Debt Instrument [Line Items]
Mortgages and other notes payable		$ 14,442		14,161
Interest Rate		3.50%
Legacy at Pleasant Grove
Debt Instrument [Line Items]
Mortgages and other notes payable		$ 12,716		13,039
Interest Rate		3.60%
New Concept Energy
Debt Instrument [Line Items]
Mortgages and other notes payable		$ 3,542		3,542
Interest Rate		6.00%
Northside on Travis
Debt Instrument [Line Items]
Mortgages and other notes payable		$ 11,394		11,656
Interest Rate		2.50%
Parc at Denham Springs
Debt Instrument [Line Items]
Mortgages and other notes payable		$ 16,399		16,737
Interest Rate		3.75%
Parc at Denham Springs Phase II
Debt Instrument [Line Items]
Mortgages and other notes payable		$ 15,608		15,789
Interest Rate		4.05%
RCM HC Enterprises
Debt Instrument [Line Items]
Mortgages and other notes payable		$ 5,086		5,086
Interest Rate		5.00%
Residences at Holland Lake
Debt Instrument [Line Items]
Mortgages and other notes payable		$ 10,424		10,622
Interest Rate		3.60%
Villas at Bon Secour
Debt Instrument [Line Items]
Mortgages and other notes payable		$ 19,205		19,410
Interest Rate		3.08%
Villas of Park West I
Debt Instrument [Line Items]
Mortgages and other notes payable		$ 9,181		9,373
Interest Rate		3.04%
Villas of Park West II
Debt Instrument [Line Items]
Mortgages and other notes payable		$ 8,334		8,504
Interest Rate		3.18%
Vista Ridge
Debt Instrument [Line Items]
Mortgages and other notes payable		$ 9,512		9,674
Interest Rate		4.00%
Windmill Farms
Debt Instrument [Line Items]
Mortgages and other notes payable		$ 4,399		$ 6,400
Interest Rate		7.75%
Windmill Farms | Mortgages
Debt Instrument [Line Items]
Interest Rate			7.75%
Windmill Farms | Mortgages | Subsequent Event
Debt Instrument [Line Items]
Interest Rate	7.50%