Mortgages and Other Notes Payable - Schedule of Notes and Interest Payable (Details) $ in Thousands	Mar. 15, 2023 USD ($) extension_option	Dec. 31, 2024 USD ($)	Jul. 10, 2024 USD ($)	Feb. 08, 2024	Dec. 31, 2023 USD ($)
Debt Instrument [Line Items]
Mortgages and other notes payable		$ 185,398			$ 182,683
Mortgages
Debt Instrument [Line Items]
Interest Rate			2.15%
Face amount			$ 6,558
770 South Post Oak
Debt Instrument [Line Items]
Mortgages and other notes payable		$ 10,939			11,187
Interest Rate		4.36%
Alera
Debt Instrument [Line Items]
Mortgages and other notes payable		$ 8,554			0
Interest Rate		7.55%
Proceeds from construction loans payable	$ 33,000
Number of extension options | extension_option	2
Extension term	1 year
Blue Lake Villas
Debt Instrument [Line Items]
Mortgages and other notes payable		$ 9,327			9,503
Interest Rate		3.15%
Blue Lake Villas Phase II
Debt Instrument [Line Items]
Mortgages and other notes payable		$ 3,271			3,349
Interest Rate		2.85%
Chelsea
Debt Instrument [Line Items]
Mortgages and other notes payable		$ 7,878			8,064
Interest Rate		3.36%
EQK Portage
Debt Instrument [Line Items]
Mortgages and other notes payable		$ 3,350			3,350
Interest Rate		5.00%
Forest Grove
Debt Instrument [Line Items]
Mortgages and other notes payable		$ 6,421			6,988
Interest Rate		7.50%
Landing on Bayou Cane
Debt Instrument [Line Items]
Mortgages and other notes payable		$ 14,162			14,442
Interest Rate		3.52%
Legacy at Pleasant Grove
Debt Instrument [Line Items]
Mortgages and other notes payable		$ 12,381			12,716
Interest Rate		3.55%
New Concept Energy
Debt Instrument [Line Items]
Mortgages and other notes payable		$ 3,542			3,542
Interest Rate		4.96%
Northside on Travis
Debt Instrument [Line Items]
Mortgages and other notes payable		$ 11,125			11,394
Interest Rate		2.50%
Parc at Denham Springs
Debt Instrument [Line Items]
Mortgages and other notes payable		$ 16,048			16,399
Interest Rate		3.75%
Parc at Denham Springs Phase II
Debt Instrument [Line Items]
Mortgages and other notes payable		$ 15,419			15,608
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		$ 10,219			10,424
Interest Rate		3.60%
Villas at Bon Secour
Debt Instrument [Line Items]
Mortgages and other notes payable		$ 18,798			19,205
Interest Rate		3.08%
Villas of Park West I
Debt Instrument [Line Items]
Mortgages and other notes payable		$ 8,983			9,181
Interest Rate		3.04%
Villas of Park West II
Debt Instrument [Line Items]
Mortgages and other notes payable		$ 8,158			8,334
Interest Rate		3.18%
Vista Ridge
Debt Instrument [Line Items]
Mortgages and other notes payable		$ 9,342			9,512
Interest Rate		4.00%
Windmill Farms
Debt Instrument [Line Items]
Mortgages and other notes payable		$ 2,395			$ 4,399
Interest Rate		7.50%
Windmill Farms | Mortgages
Debt Instrument [Line Items]
Interest Rate				7.50%