SCHEDULE III - REAL ESTATE AND ACCUMULATED DEPRECIATION - Schedule of Real Estate and Accumulated Depreciation (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	$ 179,141
Land	150,138
Buildings	370,889
Cost Capitalized Subsequent to Acquisition	47,924
Land	153,073
Building & Improvements	415,878
Total	568,951	$ 559,875	$ 359,296	$ 459,801
Accumulated Depreciation	67,365	$ 66,054	$ 62,933	$ 82,418
Multifamily
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	155,119
Land	56,140
Buildings	279,186
Cost Capitalized Subsequent to Acquisition	27,734
Land	56,174
Building & Improvements	306,886
Total	363,060
Accumulated Depreciation	21,595
Multifamily | Blue Lake Villas
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	9,503
Land	6,920
Buildings	27,680
Cost Capitalized Subsequent to Acquisition	56
Land	6,920
Building & Improvements	27,736
Total	34,656
Accumulated Depreciation	811
Multifamily | Blue Lake Villas Phase II
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	3,349
Land	2,400
Buildings	9,600
Cost Capitalized Subsequent to Acquisition	0
Land	2,400
Building & Improvements	9,600
Total	12,000
Accumulated Depreciation	280
Multifamily | Chelsea
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	8,064
Land	1,225
Buildings	11,230
Cost Capitalized Subsequent to Acquisition	53
Land	1,231
Building & Improvements	11,277
Total	12,508
Accumulated Depreciation	1,493
Multifamily | Forest Grove
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	6,988
Land	1,440
Buildings	10,234
Cost Capitalized Subsequent to Acquisition	37
Land	1,440
Building & Improvements	10,271
Total	11,711
Accumulated Depreciation	931
Multifamily | Landing on Bayou Cane
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	14,442
Land	2,011
Buildings	18,255
Cost Capitalized Subsequent to Acquisition	132
Land	2,011
Building & Improvements	18,387
Total	20,398
Accumulated Depreciation	1,929
Multifamily | Legacy at Pleasant Grove
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	12,716
Land	2,005
Buildings	18,109
Cost Capitalized Subsequent to Acquisition	116
Land	2,033
Building & Improvements	18,197
Total	20,230
Accumulated Depreciation	4,644
Multifamily | Northside on Travis
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	11,394
Land	7,160
Buildings	28,640
Cost Capitalized Subsequent to Acquisition	0
Land	7,160
Building & Improvements	28,640
Total	35,800
Accumulated Depreciation	835
Multifamily | Parc at Denham Springs
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	16,399
Land	6,060
Buildings	24,240
Cost Capitalized Subsequent to Acquisition	20
Land	6,060
Building & Improvements	24,260
Total	30,320
Accumulated Depreciation	707
Multifamily | Parc at Denham Springs Phase II
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	15,608
Land	1,505
Buildings	16,975
Cost Capitalized Subsequent to Acquisition	0
Land	1,505
Building & Improvements	16,975
Total	18,480
Accumulated Depreciation	1,764
Multifamily | Residences at Holland Lake
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	10,424
Land	6,300
Buildings	25,200
Cost Capitalized Subsequent to Acquisition	45
Land	6,300
Building & Improvements	25,245
Total	31,545
Accumulated Depreciation	738
Multifamily | Villas at Bon Secour
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	19,205
Land	2,715
Buildings	15,385
Cost Capitalized Subsequent to Acquisition	52
Land	2,715
Building & Improvements	15,437
Total	18,152
Accumulated Depreciation	2,098
Multifamily | Villas of Park West I
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	9,181
Land	8,200
Buildings	32,800
Cost Capitalized Subsequent to Acquisition	22
Land	8,200
Building & Improvements	32,822
Total	41,022
Accumulated Depreciation	957
Multifamily | Villas of Park West II
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	8,334
Land	6,860
Buildings	27,440
Cost Capitalized Subsequent to Acquisition	0
Land	6,860
Building & Improvements	27,440
Total	34,300
Accumulated Depreciation	800
Multifamily | Vista Ridge
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	9,512
Land	1,339
Buildings	13,398
Cost Capitalized Subsequent to Acquisition	6
Land	1,339
Building & Improvements	13,404
Total	14,743
Accumulated Depreciation	3,608
Multifamily | Development projects
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Land	0
Buildings	0
Cost Capitalized Subsequent to Acquisition	27,195
Land	0
Building & Improvements	27,195
Total	27,195
Accumulated Depreciation	0
Commercial
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	11,187
Land	27,783
Buildings	91,703
Cost Capitalized Subsequent to Acquisition	17,265
Land	27,759
Building & Improvements	108,992
Total	136,751
Accumulated Depreciation	45,770
Commercial | 770 South Post Oak
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	11,187
Land	1,763
Buildings	16,312
Cost Capitalized Subsequent to Acquisition	1,321
Land	1,763
Building & Improvements	17,633
Total	19,396
Accumulated Depreciation	3,905
Commercial | Browning Place
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Land	5,096
Buildings	49,441
Cost Capitalized Subsequent to Acquisition	14,005
Land	5,096
Building & Improvements	63,446
Total	68,542
Accumulated Depreciation	29,341
Commercial | Stanford Center
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Land	20,278
Buildings	25,876
Cost Capitalized Subsequent to Acquisition	2,037
Land	20,278
Building & Improvements	27,913
Total	48,191
Accumulated Depreciation	12,524
Commercial | Other
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Land	646
Buildings	74
Cost Capitalized Subsequent to Acquisition	(98)
Land	622
Building & Improvements	0
Total	622
Accumulated Depreciation	0
Developed and Undeveloped Land
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	12,835
Land	66,215
Buildings	0
Cost Capitalized Subsequent to Acquisition	2,925
Land	69,140
Building & Improvements	0
Total	69,140
Accumulated Depreciation	0
Developed and Undeveloped Land | Mercer Crossing
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0
Land	2,999
Buildings	0
Cost Capitalized Subsequent to Acquisition	(166)
Land	2,833
Building & Improvements	0
Total	2,833
Accumulated Depreciation	0
Developed and Undeveloped Land | Windmill Farms
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	4,399
Land	43,608
Buildings	0
Cost Capitalized Subsequent to Acquisition	4,570
Land	48,178
Building & Improvements	0
Total	48,178
Accumulated Depreciation	0
Developed and Undeveloped Land | Other
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	8,436
Land	19,608
Buildings	0
Cost Capitalized Subsequent to Acquisition	(1,479)
Land	18,129
Building & Improvements	0
Total	18,129
Accumulated Depreciation	$ 0