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SCHEDULE III - REAL ESTATE AND ACCUMULATED DEPRECIATION - Schedule of Real Estate and Accumulated Depreciation (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
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SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 252,048 |  |  |
Initial Cost, Land | 108,435 |  |  |
Initial Cost, Buildings | 225,151 |  |  |
Cost Capitalized Subsequent to Acquisition | 25,710 |  |  |
Land | 118,604 |  |  |
Building & Improvements | 240,692 |  |  |
Total | 359,296 | $ 459,801 | $ 477,963 | $ 463,732
Accumulated Depreciation | 62,933 | $ 82,418 | $ 90,173 | $ 79,228
Multifamily |  |  |  |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | 111,256 |  |  |
Initial Cost, Land | 14,437 |  |  |
Initial Cost, Buildings | 133,448 |  |  |
Cost Capitalized Subsequent to Acquisition | (5,402) |  |  |
Land | 14,843 |  |  |
Building & Improvements | 127,640 |  |  |
Total | 142,483 |  |  |
Accumulated Depreciation | 16,407 |  |  |
Multifamily | Chelsea |  |  |  |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | 8,037 |  |  |
Initial Cost, Land | 1,225 |  |  |
Initial Cost, Buildings | 11,230 |  |  |
Cost Capitalized Subsequent to Acquisition | 17 |  |  |
Land | 1,231 |  |  |
Building & Improvements | 11,241 |  |  |
Total | 12,472 |  |  |
Accumulated Depreciation | 893 |  |  |
Multifamily | Forest Grove |  |  |  |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | 7,263 |  |  |
Initial Cost, Land | 1,440 |  |  |
Initial Cost, Buildings | 10,234 |  |  |
Cost Capitalized Subsequent to Acquisition | 32 |  |  |
Land | 1,440 |  |  |
Building & Improvements | 10,266 |  |  |
Total | 11,706 |  |  |
Accumulated Depreciation | 410 |  |  |
Multifamily | Landing Bayou |  |  |  |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | 14,407 |  |  |
Initial Cost, Land | 2,011 |  |  |
Initial Cost, Buildings | 18,255 |  |  |
Cost Capitalized Subsequent to Acquisition | (5,962) |  |  |
Land | 2,011 |  |  |
Building & Improvements | 12,293 |  |  |
Total | 14,304 |  |  |
Accumulated Depreciation | 1,425 |  |  |
Multifamily | Legacy at Pleasant Grove |  |  |  |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | 13,352 |  |  |
Initial Cost, Land | 2,005 |  |  |
Initial Cost, Buildings | 18,109 |  |  |
Cost Capitalized Subsequent to Acquisition | 57 |  |  |
Land | 2,033 |  |  |
Building & Improvements | 18,138 |  |  |
Total | 20,171 |  |  |
Accumulated Depreciation | 3,237 |  |  |
Multifamily | Parc at Denham Springs Phase II |  |  |  |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | 15,962 |  |  |
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 | 873 |  |  |
Multifamily | Sugar Mill Phase III |  |  |  |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | 9,216 |  |  |
Initial Cost, Land | 576 |  |  |
Initial Cost, Buildings | 9,755 |  |  |
Cost Capitalized Subsequent to Acquisition | (15) |  |  |
Land | 576 |  |  |
Building & Improvements | 9,740 |  |  |
Total | 10,316 |  |  |
Accumulated Depreciation | 382 |  |  |
Multifamily | Toulon |  |  |  |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | 13,697 |  |  |
Initial Cost, Land | 1,621 |  |  |
Initial Cost, Buildings | 20,107 |  |  |
Cost Capitalized Subsequent to Acquisition | 411 |  |  |
Land | 1,993 |  |  |
Building & Improvements | 20,146 |  |  |
Total | 22,139 |  |  |
Accumulated Depreciation | 5,279 |  |  |
Multifamily | Villas at Bon Secour |  |  |  |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | 19,492 |  |  |
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 | 1,318 |  |  |
Multifamily | Vista Ridge |  |  |  |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | 9,830 |  |  |
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 | 2,590 |  |  |
Commercial |  |  |  |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | 125,912 |  |  |
Initial Cost, Land | 27,783 |  |  |
Initial Cost, Buildings | 91,703 |  |  |
Cost Capitalized Subsequent to Acquisition | 21,349 |  |  |
Land | 27,783 |  |  |
Building & Improvements | 113,052 |  |  |
Total | 140,835 |  |  |
Accumulated Depreciation | 46,526 |  |  |
Commercial | 770 South Post Oak |  |  |  |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | 11,635 |  |  |
Initial Cost, Land | 1,763 |  |  |
Initial Cost, Buildings | 16,312 |  |  |
Cost Capitalized Subsequent to Acquisition | 672 |  |  |
Land | 1,763 |  |  |
Building & Improvements | 16,984 |  |  |
Total | 18,747 |  |  |
Accumulated Depreciation | 3,037 |  |  |
Commercial | Browning Place |  |  |  |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | 75,298 |  |  |
Initial Cost, Land | 5,096 |  |  |
Initial Cost, Buildings | 49,441 |  |  |
Cost Capitalized Subsequent to Acquisition | 14,453 |  |  |
Land | 5,096 |  |  |
Building & Improvements | 63,894 |  |  |
Total | 68,990 |  |  |
Accumulated Depreciation | 28,140 |  |  |
Commercial | Stanford Center |  |  |  |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | 38,979 |  |  |
Initial Cost, Land | 20,278 |  |  |
Initial Cost, Buildings | 25,876 |  |  |
Cost Capitalized Subsequent to Acquisition | 6,224 |  |  |
Land | 20,278 |  |  |
Building & Improvements | 32,100 |  |  |
Total | 52,378 |  |  |
Accumulated Depreciation | 15,275 |  |  |
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 | 0 |  |  |
Land | 646 |  |  |
Building & Improvements | 74 |  |  |
Total | 720 |  |  |
Accumulated Depreciation | 74 |  |  |
Land |  |  |  |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | 14,880 |  |  |
Initial Cost, Land | 66,215 |  |  |
Initial Cost, Buildings | 0 |  |  |
Cost Capitalized Subsequent to Acquisition | 9,763 |  |  |
Land | 75,978 |  |  |
Building & Improvements | 0 |  |  |
Total | 75,978 |  |  |
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 | 0 |  |  |
Land | 2,999 |  |  |
Building & Improvements | 0 |  |  |
Total | 2,999 |  |  |
Accumulated Depreciation | 0 |  |  |
Land | Windmill Farms |  |  |  |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | 8,389 |  |  |
Initial Cost, Land | 43,608 |  |  |
Initial Cost, Buildings | 0 |  |  |
Cost Capitalized Subsequent to Acquisition | 2,159 |  |  |
Land | 45,767 |  |  |
Building & Improvements | 0 |  |  |
Total | 45,767 |  |  |
Accumulated Depreciation | 0 |  |  |
Land | Other |  |  |  |
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | 6,491 |  |  |
Initial Cost, Land | 19,608 |  |  |
Initial Cost, Buildings | 0 |  |  |
Cost Capitalized Subsequent to Acquisition | 7,604 |  |  |
Land | 27,212 |  |  |
Building & Improvements | 0 |  |  |
Total | 27,212 |  |  |
Accumulated Depreciation | $ 0 |  |  |

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