SCHEDULE III - REAL ESTATE PROPERTIES AND ACCUMULATED DEPRECIATION (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($)
Real estate properties and accumulated depreciation
Encumbrances	$ 136,308
Initial Cost to Company
Land	31,644
Buildings and Improvements	158,097
Costs Capitalized Subsequent to Acquisition
Land	49
Improvements	6,462
Carrying Costs	0
Gross Amount At Which Carried at September 30, 2018
Land	29,228
Buildings and Improvements	164,555
Total	193,783
Accumulated Depreciation	24,094
Commercial | Yonkers, NY
Real estate properties and accumulated depreciation
Encumbrances	1,171
Initial Cost to Company
Land	0
Buildings and Improvements	4,000
Costs Capitalized Subsequent to Acquisition
Land	0
Improvements	320
Carrying Costs	0
Gross Amount At Which Carried at September 30, 2018
Land	0
Buildings and Improvements	4,320
Total	4,320
Accumulated Depreciation	$ 2,086
Depreciation Life For Latest Income Statement	39 years
Commercial | South Daytona, FL
Real estate properties and accumulated depreciation
Encumbrances	$ 0
Initial Cost to Company
Land	10,437
Buildings and Improvements	0
Costs Capitalized Subsequent to Acquisition
Land	49
Improvements	0
Carrying Costs	0
Gross Amount At Which Carried at September 30, 2018
Land	8,021
Buildings and Improvements	0
Total	8,021
Accumulated Depreciation	0
Multi-family residential | North Charleston, SC
Real estate properties and accumulated depreciation
Encumbrances	15,988
Initial Cost to Company
Land	2,436
Buildings and Improvements	18,970
Costs Capitalized Subsequent to Acquisition
Land	0
Improvements	1,328
Carrying Costs	0
Gross Amount At Which Carried at September 30, 2018
Land	2,436
Buildings and Improvements	20,298
Total	22,734
Accumulated Depreciation	$ 5,236
Depreciation Life For Latest Income Statement	30 years
Multi-family residential | Decatur, GA
Real estate properties and accumulated depreciation
Encumbrances	$ 14,500
Initial Cost to Company
Land	1,698
Buildings and Improvements	8,676
Costs Capitalized Subsequent to Acquisition
Land	0
Improvements	2,065
Carrying Costs	0
Gross Amount At Which Carried at September 30, 2018
Land	1,698
Buildings and Improvements	10,741
Total	12,439
Accumulated Depreciation	$ 2,816
Depreciation Life For Latest Income Statement	30 years
Multi-family residential | Columbus, OH
Real estate properties and accumulated depreciation
Encumbrances	$ 9,461
Initial Cost to Company
Land	1,372
Buildings and Improvements	12,678
Costs Capitalized Subsequent to Acquisition
Land	0
Improvements	540
Carrying Costs	0
Gross Amount At Which Carried at September 30, 2018
Land	1,372
Buildings and Improvements	13,218
Total	14,590
Accumulated Depreciation	$ 3,053
Depreciation Life For Latest Income Statement	30 years
Multi-family residential | Houston, TX (Kendall)
Real estate properties and accumulated depreciation
Encumbrances	$ 14,657
Initial Cost to Company
Land	2,268
Buildings and Improvements	15,811
Costs Capitalized Subsequent to Acquisition
Land	0
Improvements	166
Carrying Costs	0
Gross Amount At Which Carried at September 30, 2018
Land	2,268
Buildings and Improvements	15,977
Total	18,245
Accumulated Depreciation	$ 625
Depreciation Life For Latest Income Statement	30 years
Multi-family residential | Pensacola, FL
Real estate properties and accumulated depreciation
Encumbrances	$ 18,380
Initial Cost to Company
Land	2,758
Buildings and Improvements	25,192
Costs Capitalized Subsequent to Acquisition
Land	0
Improvements	894
Carrying Costs	0
Gross Amount At Which Carried at September 30, 2018
Land	2,758
Buildings and Improvements	26,086
Total	28,844
Accumulated Depreciation	$ 4,788
Depreciation Life For Latest Income Statement	30 years
Multi-family residential | San Marcos, TX
Real estate properties and accumulated depreciation
Encumbrances	$ 17,114
Initial Cost to Company
Land	2,303
Buildings and Improvements	17,605
Costs Capitalized Subsequent to Acquisition
Land	0
Improvements	9
Carrying Costs	0
Gross Amount At Which Carried at September 30, 2018
Land	2,303
Buildings and Improvements	17,614
Total	19,917
Accumulated Depreciation	$ 204
Depreciation Life For Latest Income Statement	30 years
Multi-family residential | La Grange, GA
Real estate properties and accumulated depreciation
Encumbrances	$ 14,646
Initial Cost to Company
Land	832
Buildings and Improvements	21,969
Costs Capitalized Subsequent to Acquisition
Land	0
Improvements	559
Carrying Costs	0
Gross Amount At Which Carried at September 30, 2018
Land	832
Buildings and Improvements	22,528
Total	23,360
Accumulated Depreciation	$ 3,407
Depreciation Life For Latest Income Statement	30 years
Multi-family residential | Fredricksburg, VA
Real estate properties and accumulated depreciation
Encumbrances	$ 28,123
Initial Cost to Company
Land	7,540
Buildings and Improvements	33,196
Costs Capitalized Subsequent to Acquisition
Land	0
Improvements	581
Carrying Costs	0
Gross Amount At Which Carried at September 30, 2018
Land	7,540
Buildings and Improvements	33,773
Total	41,313
Accumulated Depreciation	$ 1,879
Depreciation Life For Latest Income Statement	30 years