INVESTMENT IN UNCONSOLIDATED JOINT VENTURES (Income) (Details) - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Oct. 28, 2009	Oct. 03, 2005	Mar. 02, 2005	Sep. 30, 2004	Aug. 31, 2004	Nov. 30, 2001
Revenues
Rental income	$ 6,073,093	$ 5,945,278
Laundry and Sundry Income	40,388	38,711
Total Revenues	6,113,481	5,983,989
Expenses
Administrative	95,095	101,568
Depreciation and amortization	1,466,594	1,428,571
Management Fees	163,616	159,840
Operating	557,415	579,810
Renting	44,657	45,600
Repairs and Maintenance	492,106	675,249
Taxes and Insurance	785,411	710,397
Total Expenses	3,604,894	3,701,035
Income Before Other Income	2,508,587	2,282,954
Other Income (loss)
Interest Expense	(1,731,620)	(1,609,345)
Gain on Sale of Real Estate	433,662	1,644,763
Total Other Income (Loss)	(1,297,958)	35,418
Net Income (Loss)	1,210,629	2,318,372
Proportionate share of net income (loss)	548,939	1,100,900
NERA 50%
Other Income (loss)
Proportionate share of net income (loss)	$ 323,424	$ 867,757
Ownership interest (as a percent)	50.00%	50.00%
NERA 40%
Other Income (loss)
Proportionate share of net income (loss)	$ 225,515	$ 233,143
Ownership interest (as a percent)	40.00%	40.00%
Hamilton Essex 81
Revenues
Rental income	$ 459,573	$ 411,222
Laundry and Sundry Income	3,005	3,005
Total Revenues	462,578	414,227
Expenses
Administrative	5,379	9,680
Depreciation and amortization	119,544	114,285
Management Fees	17,206	13,204
Operating	21,450	24,131
Renting	3,330	3,291
Repairs and Maintenance	37,884	54,501
Taxes and Insurance	61,830	62,527
Total Expenses	266,623	281,619
Income Before Other Income	195,955	132,608
Other Income (loss)
Interest Expense	(121,005)	(99,313)
Total Other Income (Loss)	(121,005)	(99,313)
Net Income (Loss)	74,950	$ 33,295
Ownership interest (as a percent)		50.00%
Hamilton Essex 81 | NERA 50%
Other Income (loss)
Proportionate share of net income (loss)	$ 37,475	$ 16,648
Ownership interest (as a percent)	50.00%
Hamilton Essex Development
Revenues
Rental income	$ 75,290	53,928
Total Revenues	75,290	53,928
Expenses
Administrative	2,092	488
Depreciation and amortization	5,074	665
Management Fees	2,160	2,157
Operating	8
Repairs and Maintenance		4,163
Taxes and Insurance	15,677	16,723
Total Expenses	25,011	24,196
Income Before Other Income	50,279	29,732
Other Income (loss)
Net Income (Loss)	50,279	$ 29,732
Ownership interest (as a percent)		50.00%
Hamilton Essex Development | NERA 50%
Other Income (loss)
Proportionate share of net income (loss)	$ 25,140	$ 14,866
Ownership interest (as a percent)	50.00%
345 Franklin
Revenues
Rental income	$ 385,243	403,837
Laundry and Sundry Income	1,389	1,217
Total Revenues	386,632	405,054
Expenses
Administrative	5,390	6,455
Depreciation and amortization	86,226	86,251
Management Fees	14,056	16,126
Operating	22,603	20,580
Renting	3,520	497
Repairs and Maintenance	18,467	21,497
Taxes and Insurance	40,241	41,631
Total Expenses	190,503	193,037
Income Before Other Income	196,129	212,017
Other Income (loss)
Interest Expense	(94,247)	(96,961)
Total Other Income (Loss)	(94,247)	(96,961)
Net Income (Loss)	101,882	$ 115,056
Ownership interest (as a percent)		50.00%						50.00%
345 Franklin | NERA 50%
Other Income (loss)
Proportionate share of net income (loss)	$ 50,941	$ 57,528
Ownership interest (as a percent)	50.00%
Hamilton 1025
Revenues
Rental income	$ 23,594	38,221
Total Revenues	23,594	38,221
Expenses
Administrative	1,694	1,499
Depreciation and amortization	3,196
Management Fees	965	1,508
Operating	775	156
Repairs and Maintenance	8,040	40,207
Taxes and Insurance	7,349	18,171
Total Expenses	22,019	61,541
Income Before Other Income	1,575	(23,320)
Other Income (loss)
Interest Expense		(26)
Gain on Sale of Real Estate	754	817,006
Total Other Income (Loss)	754	816,980
Net Income (Loss)	2,329	$ 793,660
Ownership interest (as a percent)		50.00%			50.00%
Hamilton 1025 | NERA 50%
Other Income (loss)
Proportionate share of net income (loss)	$ 1,165	$ 396,830
Ownership interest (as a percent)	50.00%
Hamilton Bay Apts
Revenues
Rental income	$ 3,629	22,203
Total Revenues	3,629	22,203
Expenses
Administrative	3,445	3,066
Depreciation and amortization	5,420	10,000
Management Fees	145	1,022
Operating	(109)	825
Repairs and Maintenance	10,266	34,224
Taxes and Insurance	4,906	16,459
Total Expenses	24,073	65,596
Income Before Other Income	(20,444)	(43,393)
Other Income (loss)
Interest Expense	(6)	(49)
Gain on Sale of Real Estate	432,908	827,757
Total Other Income (Loss)	432,902	827,708
Net Income (Loss)	412,458	$ 784,315
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	$ 392,158
Ownership interest (as a percent)	50.00%
Hamilton Minuteman
Revenues
Rental income	$ 274,837	263,051
Laundry and Sundry Income	1,907	675
Total Revenues	276,744	263,726
Expenses
Administrative	3,716	1,824
Depreciation and amortization	88,595	87,722
Management Fees	11,067	10,368
Operating	23,755	33,850
Renting	2,032	3,378
Repairs and Maintenance	36,672	19,617
Taxes and Insurance	32,251	31,046
Total Expenses	198,088	187,805
Income Before Other Income	78,656	75,921
Other Income (loss)
Interest Expense	(57,991)	(58,519)
Total Other Income (Loss)	(57,991)	(58,519)
Net Income (Loss)	20,665	$ 17,402
Ownership interest (as a percent)		50.00%				50.00%
Hamilton Minuteman | NERA 50%
Other Income (loss)
Proportionate share of net income (loss)	$ 10,333	$ 8,701
Ownership interest (as a percent)	50.00%
Hamilton on Main Apts
Revenues
Rental income	$ 822,668	858,213
Laundry and Sundry Income	10,062	9,126
Total Revenues	832,730	867,339
Expenses
Administrative	17,847	13,127
Depreciation and amortization	258,438	255,506
Management Fees	31,868	32,443
Operating	107,289	120,393
Renting	16,112	8,652
Repairs and Maintenance	124,192	182,374
Taxes and Insurance	104,431	104,551
Total Expenses	660,177	717,046
Income Before Other Income	172,553	150,293
Other Income (loss)
Interest Expense	(188,268)	(188,239)
Total Other Income (Loss)	(188,268)	(188,239)
Net Income (Loss)	(15,715)	$ (37,946)
Ownership interest (as a percent)		50.00%					50.00%
Hamilton on Main Apts | NERA 50%
Other Income (loss)
Proportionate share of net income (loss)	$ (7,858)	$ (18,973)
Ownership interest (as a percent)	50.00%
Dexter Park
Revenues
Rental income	$ 4,028,259	3,894,603
Laundry and Sundry Income	24,025	24,688
Total Revenues	4,052,284	3,919,291
Expenses
Administrative	55,532	65,429
Depreciation and amortization	900,101	874,142
Management Fees	86,149	83,012
Operating	381,644	379,875
Renting	19,663	29,782
Repairs and Maintenance	256,585	318,666
Taxes and Insurance	518,726	419,289
Total Expenses	2,218,400	2,170,195
Income Before Other Income	1,833,884	1,749,096
Other Income (loss)
Interest Expense	(1,270,103)	(1,166,238)
Total Other Income (Loss)	(1,270,103)	(1,166,238)
Net Income (Loss)	563,781	$ 582,858
Ownership interest (as a percent)		40.00%	40.00%
Dexter Park | NERA 40%
Other Income (loss)
Proportionate share of net income (loss)	$ 225,515	$ 233,143
Ownership interest (as a percent)	40.00%