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SCHEDULE III - REAL ESTATE AND ACCUMULATED DEPRECIATION - Schedule of Real Estate and Accumulated Depreciation (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
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SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 251,008 |  |  |
Initial Cost, Land | 150,138 |  |  |
Initial Cost, Buildings | 370,889 |  |  |
Cost Capitalized Subsequent to Acquisition | 38,848 |  |  |
Land | 163,990 |  |  |
Building & Improvements | 395,885 |  |  |
Total | 559,875 | $ 359,296 | $ 459,801 | $ 477,963
Accumulated Depreciation | 66,054 | $ 62,933 | $ 82,418 | $ 90,173
Multifamily |  |  |  |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | 157,065 |  |  |
Initial Cost, Land | 56,140 |  |  |
Initial Cost, Buildings | 279,186 |  |  |
Cost Capitalized Subsequent to Acquisition | (1,241) |  |  |
Land | 56,174 |  |  |
Building & Improvements | 277,911 |  |  |
Total | 334,085 |  |  |
Accumulated Depreciation | 13,985 |  |  |
Multifamily | Blue Lake Villas |  |  |  |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | 9,673 |  |  |
Initial Cost, Land | 6,920 |  |  |
Initial Cost, Buildings | 27,680 |  |  |
Cost Capitalized Subsequent to Acquisition | 0 |  |  |
Land | 6,920 |  |  |
Building & Improvements | 27,680 |  |  |
Total | 34,600 |  |  |
Accumulated Depreciation | 115 |  |  |
Multifamily | Blue Lake Villas Phase II |  |  |  |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | 3,424 |  |  |
Initial Cost, Land | 2,400 |  |  |
Initial Cost, Buildings | 9,600 |  |  |
Cost Capitalized Subsequent to Acquisition | 0 |  |  |
Land | 2,400 |  |  |
Building & Improvements | 9,600 |  |  |
Total | 12,000 |  |  |
Accumulated Depreciation | 40 |  |  |
Multifamily | Chelsea |  |  |  |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | 7,875 |  |  |
Initial Cost, Land | 1,225 |  |  |
Initial Cost, Buildings | 11,230 |  |  |
Cost Capitalized Subsequent to Acquisition | 53 |  |  |
Land | 1,231 |  |  |
Building & Improvements | 11,277 |  |  |
Total | 12,508 |  |  |
Accumulated Depreciation | 1,192 |  |  |
Multifamily | Forest Grove |  |  |  |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | 7,128 |  |  |
Initial Cost, Land | 1,440 |  |  |
Initial Cost, Buildings | 10,234 |  |  |
Cost Capitalized Subsequent to Acquisition | 37 |  |  |
Land | 1,440 |  |  |
Building & Improvements | 10,271 |  |  |
Total | 11,711 |  |  |
Accumulated Depreciation | 670 |  |  |
Multifamily | Landing Bayou |  |  |  |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | 14,161 |  |  |
Initial Cost, Land | 2,011 |  |  |
Initial Cost, Buildings | 18,255 |  |  |
Cost Capitalized Subsequent to Acquisition | (1,502) |  |  |
Land | 2,011 |  |  |
Building & Improvements | 16,753 |  |  |
Total | 18,764 |  |  |
Accumulated Depreciation | 1,732 |  |  |
Multifamily | Legacy at Pleasant Grove |  |  |  |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | 13,039 |  |  |
Initial Cost, Land | 2,005 |  |  |
Initial Cost, Buildings | 18,109 |  |  |
Cost Capitalized Subsequent to Acquisition | 92 |  |  |
Land | 2,033 |  |  |
Building & Improvements | 18,173 |  |  |
Total | 20,206 |  |  |
Accumulated Depreciation | 3,716 |  |  |
Multifamily | Northside on Travis |  |  |  |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | 11,656 |  |  |
Initial Cost, Land | 7,160 |  |  |
Initial Cost, Buildings | 28,640 |  |  |
Cost Capitalized Subsequent to Acquisition | 0 |  |  |
Land | 7,160 |  |  |
Building & Improvements | 28,640 |  |  |
Total | 35,800 |  |  |
Accumulated Depreciation | 119 |  |  |
Multifamily | Parc at Denham Springs |  |  |  |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | 16,737 |  |  |
Initial Cost, Land | 6,060 |  |  |
Initial Cost, Buildings | 24,240 |  |  |
Cost Capitalized Subsequent to Acquisition | 14 |  |  |
Land | 6,060 |  |  |
Building & Improvements | 24,254 |  |  |
Total | 30,314 |  |  |
Accumulated Depreciation | 101 |  |  |
Multifamily | Parc at Denham Springs Phase II |  |  |  |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | 15,789 |  |  |
Initial Cost, Land | 1,505 |  |  |
Initial Cost, Buildings | 16,975 |  |  |
Cost Capitalized Subsequent to Acquisition | 0 |  |  |
Land | 1,505 |  |  |
Building & Improvements | 16,975 |  |  |
Total | 18,480 |  |  |
Accumulated Depreciation | 1,297 |  |  |
Multifamily | Residences at Holland Lake |  |  |  |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | 10,622 |  |  |
Initial Cost, Land | 6,300 |  |  |
Initial Cost, Buildings | 25,200 |  |  |
Cost Capitalized Subsequent to Acquisition | 7 |  |  |
Land | 6,300 |  |  |
Building & Improvements | 25,207 |  |  |
Total | 31,507 |  |  |
Accumulated Depreciation | 105 |  |  |
Multifamily | Villas at Bon Secour |  |  |  |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | 19,410 |  |  |
Initial Cost, Land | 2,715 |  |  |
Initial Cost, Buildings | 15,385 |  |  |
Cost Capitalized Subsequent to Acquisition | 52 |  |  |
Land | 2,715 |  |  |
Building & Improvements | 15,437 |  |  |
Total | 18,152 |  |  |
Accumulated Depreciation | 1,708 |  |  |
Multifamily | Villas of Park West I |  |  |  |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | 9,373 |  |  |
Initial Cost, Land | 8,200 |  |  |
Initial Cost, Buildings | 32,800 |  |  |
Cost Capitalized Subsequent to Acquisition | 0 |  |  |
Land | 8,200 |  |  |
Building & Improvements | 32,800 |  |  |
Total | 41,000 |  |  |
Accumulated Depreciation | 137 |  |  |
Multifamily | Villas of Park West II |  |  |  |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | 8,504 |  |  |
Initial Cost, Land | 6,860 |  |  |
Initial Cost, Buildings | 27,440 |  |  |
Cost Capitalized Subsequent to Acquisition | 0 |  |  |
Land | 6,860 |  |  |
Building & Improvements | 27,440 |  |  |
Total | 34,300 |  |  |
Accumulated Depreciation | 114 |  |  |
Multifamily | Vista Ridge |  |  |  |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | 9,674 |  |  |
Initial Cost, Land | 1,339 |  |  |
Initial Cost, Buildings | 13,398 |  |  |
Cost Capitalized Subsequent to Acquisition | 6 |  |  |
Land | 1,339 |  |  |
Building & Improvements | 13,404 |  |  |
Total | 14,743 |  |  |
Accumulated Depreciation | 2,939 |  |  |
Commercial |  |  |  |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | 77,952 |  |  |
Initial Cost, Land | 27,783 |  |  |
Initial Cost, Buildings | 91,703 |  |  |
Cost Capitalized Subsequent to Acquisition | 26,247 |  |  |
Land | 27,759 |  |  |
Building & Improvements | 117,974 |  |  |
Total | 145,733 |  |  |
Accumulated Depreciation | 52,069 |  |  |
Commercial | 770 South Post Oak |  |  |  |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | 11,406 |  |  |
Initial Cost, Land | 1,763 |  |  |
Initial Cost, Buildings | 16,312 |  |  |
Cost Capitalized Subsequent to Acquisition | 1,142 |  |  |
Land | 1,763 |  |  |
Building & Improvements | 17,454 |  |  |
Total | 19,217 |  |  |
Accumulated Depreciation | 3,605 |  |  |
Commercial | Browning Place |  |  |  |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | 66,546 |  |  |
Initial Cost, Land | 5,096 |  |  |
Initial Cost, Buildings | 49,441 |  |  |
Cost Capitalized Subsequent to Acquisition | 18,895 |  |  |
Land | 5,096 |  |  |
Building & Improvements | 68,336 |  |  |
Total | 73,432 |  |  |
Accumulated Depreciation | 31,708 |  |  |
Commercial | Stanford Center |  |  |  |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | 0 |  |  |
Initial Cost, Land | 20,278 |  |  |
Initial Cost, Buildings | 25,876 |  |  |
Cost Capitalized Subsequent to Acquisition | 6,250 |  |  |
Land | 20,278 |  |  |
Building & Improvements | 32,126 |  |  |
Total | 52,404 |  |  |
Accumulated Depreciation | 16,700 |  |  |
Commercial | Other |  |  |  |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | 0 |  |  |
Initial Cost, Land | 646 |  |  |
Initial Cost, Buildings | 74 |  |  |
Cost Capitalized Subsequent to Acquisition | (40) |  |  |
Land | 622 |  |  |
Building & Improvements | 58 |  |  |
Total | 680 |  |  |
Accumulated Depreciation | 56 |  |  |
Land |  |  |  |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | 15,991 |  |  |
Initial Cost, Land | 66,215 |  |  |
Initial Cost, Buildings | 0 |  |  |
Cost Capitalized Subsequent to Acquisition | 13,842 |  |  |
Land | 80,057 |  |  |
Building & Improvements | 0 |  |  |
Total | 80,057 |  |  |
Accumulated Depreciation | 0 |  |  |
Land | Mercer Crossing |  |  |  |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | 0 |  |  |
Initial Cost, Land | 2,999 |  |  |
Initial Cost, Buildings | 0 |  |  |
Cost Capitalized Subsequent to Acquisition | (166) |  |  |
Land | 2,833 |  |  |
Building & Improvements | 0 |  |  |
Total | 2,833 |  |  |
Accumulated Depreciation | 0 |  |  |
Land | Windmill Farms |  |  |  |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | 6,400 |  |  |
Initial Cost, Land | 43,608 |  |  |
Initial Cost, Buildings | 0 |  |  |
Cost Capitalized Subsequent to Acquisition | 2,707 |  |  |
Land | 46,315 |  |  |
Building & Improvements | 0 |  |  |
Total | 46,315 |  |  |
Accumulated Depreciation | 0 |  |  |
Land | Other |  |  |  |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | 9,591 |  |  |
Initial Cost, Land | 19,608 |  |  |
Initial Cost, Buildings | 0 |  |  |
Cost Capitalized Subsequent to Acquisition | 11,301 |  |  |
Land | 30,909 |  |  |
Building & Improvements | 0 |  |  |
Total | 30,909 |  |  |
Accumulated Depreciation | $ 0 |  |  |

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