INVESTMENT IN UNCONSOLIDATED JOINT VENTURES (Income) (Details) - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Oct. 28, 2009	Oct. 03, 2005	Mar. 02, 2005	Sep. 30, 2004	Aug. 31, 2004	Nov. 30, 2001
Revenues
Rental income	$ 6,351,455	$ 6,073,093
Laundry and Sundry Income	38,330	40,388
Total Revenues	6,389,785	6,113,481
Expenses
Administrative	90,101	95,095
Depreciation and amortization	1,476,886	1,466,594
Management Fees	170,825	163,616
Operating	465,009	557,415
Renting	39,052	44,657
Repairs and Maintenance	481,331	492,106
Taxes and Insurance	859,024	785,411
Total Expenses	3,582,228	3,604,894
Income Before Other Income	2,807,557	2,508,587
Other Income (loss)
Interest Expense	(1,713,904)	(1,731,620)
Gain on Sale of Real Estate		433,662
Total Other Income (Loss)		(1,297,958)
Net Income (Loss)		1,210,629
Proportionate share of net income (loss)	474,567	548,939
NERA 50%
Other Income (loss)
Proportionate share of net income (loss)	$ 185,525	$ 323,424
Ownership interest (as a percent)	50.00%	50.00%
NERA 40%
Other Income (loss)
Proportionate share of net income (loss)	$ 289,042	$ 225,515
Ownership interest (as a percent)	40.00%	40.00%
Hamilton Essex 81
Revenues
Rental income	$ 439,380	$ 459,573
Laundry and Sundry Income	3,385	3,005
Total Revenues	442,765	462,578
Expenses
Administrative	6,188	5,379
Depreciation and amortization	121,642	119,544
Management Fees	17,736	17,206
Operating	25,524	21,450
Renting	2,775	3,330
Repairs and Maintenance	27,009	37,884
Taxes and Insurance	64,677	61,830
Total Expenses	265,551	266,623
Income Before Other Income	177,214	195,955
Other Income (loss)
Interest Expense	(100,733)	(121,005)
Total Other Income (Loss)	(100,733)	(121,005)
Net Income (Loss)	76,481	$ 74,950
Ownership interest (as a percent)		50.00%
Hamilton Essex 81 | NERA 50%
Other Income (loss)
Proportionate share of net income (loss)	$ 38,241	$ 37,475
Ownership interest (as a percent)	50.00%
Hamilton Essex Development
Revenues
Rental income	$ 60,471	75,290
Total Revenues	60,471	75,290
Expenses
Administrative	650	2,092
Depreciation and amortization	5,074	5,074
Management Fees	2,203	2,160
Operating		8
Taxes and Insurance	15,218	15,677
Total Expenses	23,145	25,011
Income Before Other Income	37,326	50,279
Other Income (loss)
Net Income (Loss)	37,326	$ 50,279
Ownership interest (as a percent)		50.00%
Hamilton Essex Development | NERA 50%
Other Income (loss)
Proportionate share of net income (loss)	$ 18,663	$ 25,140
Ownership interest (as a percent)	50.00%
345 Franklin
Revenues
Rental income	$ 428,150	385,243
Laundry and Sundry Income	454	1,389
Total Revenues	428,604	386,632
Expenses
Administrative	7,757	5,390
Depreciation and amortization	84,494	86,226
Management Fees	16,466	14,056
Operating	12,988	22,603
Renting	8,753	3,520
Repairs and Maintenance	21,578	18,467
Taxes and Insurance	39,906	40,241
Total Expenses	191,942	190,503
Income Before Other Income	236,662	196,129
Other Income (loss)
Interest Expense	(93,426)	(94,247)
Total Other Income (Loss)	(93,426)	(94,247)
Net Income (Loss)	143,236	$ 101,882
Ownership interest (as a percent)		50.00%						50.00%
345 Franklin | NERA 50%
Other Income (loss)
Proportionate share of net income (loss)	$ 71,618	$ 50,941
Ownership interest (as a percent)	50.00%
Hamilton 1025
Revenues
Rental income	$ 20,558	23,594
Total Revenues	20,558	23,594
Expenses
Administrative	10,125	1,694
Depreciation and amortization	816	3,196
Management Fees	822	965
Operating	45	775
Repairs and Maintenance		8,040
Taxes and Insurance	4,189	7,349
Total Expenses	15,997	22,019
Income Before Other Income	4,561	1,575
Other Income (loss)
Gain on Sale of Real Estate		754
Total Other Income (Loss)		754
Net Income (Loss)	4,561	$ 2,329
Ownership interest (as a percent)		50.00%			50.00%
Hamilton 1025 | NERA 50%
Other Income (loss)
Proportionate share of net income (loss)	$ 2,281	$ 1,165
Ownership interest (as a percent)	50.00%
Hamilton Bay Apts
Revenues
Rental income		3,629
Total Revenues		3,629
Expenses
Administrative		3,445
Depreciation and amortization		5,420
Management Fees		145
Operating		(109)
Repairs and Maintenance		10,266
Taxes and Insurance		4,906
Total Expenses		24,073
Income Before Other Income		(20,444)
Other Income (loss)
Interest Expense		(6)
Gain on Sale of Real Estate		432,908
Total Other Income (Loss)		432,902
Net Income (Loss)		$ 412,458
Ownership interest (as a percent)		50.00%		50.00%
Hamilton Bay Apts | NERA 50%
Other Income (loss)
Proportionate share of net income (loss)		$ 206,229
Hamilton Minuteman
Revenues
Rental income	$ 290,693	274,837
Laundry and Sundry Income		1,907
Total Revenues	290,693	276,744
Expenses
Administrative	2,481	3,716
Depreciation and amortization	86,826	88,595
Management Fees	11,532	11,067
Operating	22,226	23,755
Renting	3,000	2,032
Repairs and Maintenance	10,895	36,672
Taxes and Insurance	36,051	32,251
Total Expenses	173,011	198,088
Income Before Other Income	117,682	78,656
Other Income (loss)
Interest Expense	(59,259)	(57,991)
Total Other Income (Loss)	(59,259)	(57,991)
Net Income (Loss)	58,423	$ 20,665
Ownership interest (as a percent)		50.00%				50.00%
Hamilton Minuteman | NERA 50%
Other Income (loss)
Proportionate share of net income (loss)	$ 29,211	$ 10,333
Ownership interest (as a percent)	50.00%
Hamilton on Main Apts
Revenues
Rental income	$ 905,700	822,668
Laundry and Sundry Income	8,749	10,062
Total Revenues	914,449	832,730
Expenses
Administrative	15,848	17,847
Depreciation and amortization	261,047	258,438
Management Fees	34,984	31,868
Operating	93,845	107,289
Renting	7,720	16,112
Repairs and Maintenance	134,837	124,192
Taxes and Insurance	122,762	104,431
Total Expenses	671,043	660,177
Income Before Other Income	243,406	172,553
Other Income (loss)
Interest Expense	(192,382)	(188,268)
Total Other Income (Loss)	(192,382)	(188,268)
Net Income (Loss)	51,024	$ (15,715)
Ownership interest (as a percent)		50.00%					50.00%
Hamilton on Main Apts | NERA 50%
Other Income (loss)
Proportionate share of net income (loss)	$ 25,512	$ (7,858)
Ownership interest (as a percent)	50.00%
Dexter Park
Revenues
Rental income	$ 4,206,503	4,028,259
Laundry and Sundry Income	25,742	24,025
Total Revenues	4,232,245	4,052,284
Expenses
Administrative	47,052	55,532
Depreciation and amortization	916,987	900,101
Management Fees	87,082	86,149
Operating	310,381	381,644
Renting	16,804	19,663
Repairs and Maintenance	287,012	256,585
Taxes and Insurance	576,221	518,726
Total Expenses	2,241,539	2,218,400
Income Before Other Income	1,990,706	1,833,884
Other Income (loss)
Interest Expense	(1,268,104)	(1,270,103)
Total Other Income (Loss)	(1,268,104)	(1,270,103)
Net Income (Loss)	722,602	$ 563,781
Ownership interest (as a percent)		40.00%	40.00%
Dexter Park | NERA 40%
Other Income (loss)
Proportionate share of net income (loss)	$ 289,042	$ 225,515
Ownership interest (as a percent)	40.00%