INVESTMENT IN UNCONSOLIDATED JOINT VENTURES (Income) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Oct. 28, 2009	Mar. 02, 2005	Sep. 30, 2004	Aug. 31, 2004	Nov. 30, 2001
Revenues
Rental income	$ 24,015,295	$ 23,526,780	$ 22,622,412
Laundry and Sundry Income	170,727	151,950	160,515
Total Revenues	24,186,022	23,678,730	22,782,927
Expenses
Administrative	336,837	368,608	396,789
Depreciation and amortization	5,856,136	5,871,516	7,994,062
Management Fees	692,250	678,263	651,872
Operating	1,770,827	1,947,228	1,900,986
Renting	331,500	171,267	252,309
Repairs and Maintenance	2,994,069	2,546,726	2,589,052
Taxes and Insurance	2,892,136	2,750,187	2,702,908
Total Expenses	14,873,755	14,333,795	16,487,978
Income Before Other Income	9,312,267	9,344,935	6,294,949
Other Income (loss)
Interest Expense	(7,032,305)	(7,440,510)	(7,655,391)
Interest Income	10	14	489
Other Income (Expense)		96	475,335
Gain on Sale of Real Estate	1,661,425	169,093
Total Other Income (Loss)	(5,370,870)	(7,271,307)	(7,179,567)
Net Income (Loss)	3,941,397	2,073,628	(884,621)
Proportionate share of net income (loss)	1,785,827	868,574
NERA 50%
Other Income (loss)
Proportionate share of net income (loss)	1,046,346	195,616	142,764
NERA 40%
Other Income (loss)
Proportionate share of net income (loss)	739,481	672,958	(468,061)
Hamilton Essex 81
Revenues
Rental income	1,534,910	1,464,871	1,409,443
Laundry and Sundry Income	15,263	13,319	17,634
Total Revenues	1,550,173	1,478,190	1,427,077
Expenses
Administrative	31,400	28,849	32,908
Depreciation and amortization	452,186	439,046	418,313
Management Fees	63,880	63,226	57,914
Operating	103,761	102,872	121,354
Renting	26,731	11,246	11,900
Repairs and Maintenance	157,398	153,329	156,321
Taxes and Insurance	227,148	216,602	228,556
Total Expenses	1,062,504	1,015,170	1,027,266
Income Before Other Income	487,669	463,020	399,811
Other Income (loss)
Interest Expense	(289,041)	(432,732)	(499,718)
Interest Income	0
Gain on Sale of Real Estate	0
Total Other Income (Loss)	(289,041)	(432,732)	(499,718)
Net Income (Loss)	198,628	$ 30,288	$ (99,907)
Proportionate share of net income (loss)	0
Ownership interest (as a percent)		50.00%	50.00%
Hamilton Essex 81 | NERA 50%
Other Income (loss)
Proportionate share of net income (loss)	$ 99,314	$ 15,144	$ (49,954)
Ownership interest (as a percent)	50.00%
Hamilton Essex 81 | NERA 40%
Other Income (loss)
Proportionate share of net income (loss)	$ 0
Hamilton Essex Development
Revenues
Rental income	240,000	277,568	291,517
Laundry and Sundry Income	0
Total Revenues	240,000	277,568	291,517
Expenses
Administrative	1,740	2,000	1,530
Depreciation and amortization	2,830	2,829	2,829
Management Fees	9,600	11,114	11,661
Operating	0
Renting	0
Repairs and Maintenance	3,150	200	3,810
Taxes and Insurance	58,725	52,846	53,556
Total Expenses	76,045	68,989	73,386
Income Before Other Income	163,955	208,579	218,131
Other Income (loss)
Interest Expense	0	(46,283)	(64,335)
Interest Income	0
Gain on Sale of Real Estate	0
Total Other Income (Loss)	0	(46,283)	(64,335)
Net Income (Loss)	163,955	$ 162,296	$ 153,796
Proportionate share of net income (loss)	0
Ownership interest (as a percent)		50.00%	50.00%
Hamilton Essex Development | NERA 50%
Other Income (loss)
Proportionate share of net income (loss)	$ 81,978	$ 81,148	$ 76,898
Ownership interest (as a percent)	50.00%
Hamilton Essex Development | NERA 40%
Other Income (loss)
Proportionate share of net income (loss)	$ 0
345 Franklin
Revenues
Rental income	1,471,455	1,396,428	1,347,653
Laundry and Sundry Income	4,707	656	1,547
Total Revenues	1,476,162	1,397,084	1,349,200
Expenses
Administrative	34,512	35,071	41,319
Depreciation and amortization	348,169	368,775	395,155
Management Fees	60,545	57,604	55,776
Operating	72,280	80,873	60,695
Renting	22,395	15,815	13,870
Repairs and Maintenance	66,606	61,183	67,219
Taxes and Insurance	130,867	124,266	118,103
Total Expenses	735,374	743,587	752,137
Income Before Other Income	740,788	653,497	597,063
Other Income (loss)
Interest Expense	(397,726)	(398,414)	(398,109)
Interest Income	0
Gain on Sale of Real Estate	0
Total Other Income (Loss)	(397,726)	(398,414)	(398,109)
Net Income (Loss)	343,062	$ 255,083	$ 198,954
Proportionate share of net income (loss)	0
Ownership interest (as a percent)		50.00%	50.00%					50.00%
345 Franklin | NERA 50%
Other Income (loss)
Proportionate share of net income (loss)	$ 171,531	$ 127,542	$ 99,477
Ownership interest (as a percent)	50.00%
345 Franklin | NERA 40%
Other Income (loss)
Proportionate share of net income (loss)	$ 0
Hamilton 1025
Revenues
Rental income	798,710	962,511	933,315
Laundry and Sundry Income	0
Total Revenues	798,710	962,511	933,315
Expenses
Administrative	9,636	6,262	8,550
Depreciation and amortization	184,898	236,513	235,782
Management Fees	30,493	37,736	37,388
Operating	919	1,050	1,023
Renting	1,789	270	9,701
Repairs and Maintenance	296,423	314,409	326,111
Taxes and Insurance	161,984	166,842	158,129
Total Expenses	686,142	763,082	776,684
Income Before Other Income	112,568	199,429	156,631
Other Income (loss)
Interest Expense	(150,061)	(281,093)	(285,410)
Interest Income	10	14	21
Gain on Sale of Real Estate	1,324,174
Total Other Income (Loss)	1,174,123	(281,079)	(285,389)
Net Income (Loss)	1,286,691	$ (81,649)	$ (128,759)
Proportionate share of net income (loss)	0
Ownership interest (as a percent)		50.00%	50.00%		50.00%
Hamilton 1025 | NERA 50%
Other Income (loss)
Proportionate share of net income (loss)	$ 643,346	$ (40,825)	$ (64,380)
Ownership interest (as a percent)	50.00%
Hamilton 1025 | NERA 40%
Other Income (loss)
Proportionate share of net income (loss)	$ 0
Hamilton Bay Sales
Revenues
Rental income	40,290	99,413	187,228
Laundry and Sundry Income	0
Total Revenues	40,290	99,413	187,228
Expenses
Administrative	6,295	8,105	4,361
Depreciation and amortization	4,921	25,418	36,183
Management Fees	1,745	3,987	7,545
Operating	315	911	1,058
Renting	0		1,238
Repairs and Maintenance	22,054	43,559	84,460
Taxes and Insurance	9,236	20,461	36,624
Total Expenses	44,566	102,441	171,469
Income Before Other Income	(4,276)	(3,028)	15,759
Other Income (loss)
Interest Expense	(71)	(322)	(596)
Interest Income	0		468
Other Income (Expense)			475,335
Gain on Sale of Real Estate	337,251	169,093
Total Other Income (Loss)	337,180	168,771	475,207
Net Income (Loss)	332,904	$ 165,743	$ 490,966
Proportionate share of net income (loss)	0
Ownership interest (as a percent)		50.00%	50.00%
Hamilton Bay Sales | NERA 50%
Other Income (loss)
Proportionate share of net income (loss)	$ 166,452	$ 82,871	$ 245,483
Ownership interest (as a percent)	50.00%
Hamilton Bay Sales | NERA 40%
Other Income (loss)
Proportionate share of net income (loss)	$ 0
Hamilton Bay Apts
Revenues
Rental income	969,220	973,559	943,525
Laundry and Sundry Income	0
Total Revenues	969,220	973,559	943,525
Expenses
Administrative	10,768	8,592	18,053
Depreciation and amortization	298,503	295,176	294,272
Management Fees	38,258	38,640	38,392
Operating	2,358	1,173	1,801
Renting	4,354	2,986	6,563
Repairs and Maintenance	413,972	362,861	294,811
Taxes and Insurance	164,667	154,348	158,858
Total Expenses	932,880	863,776	812,750
Income Before Other Income	36,340	109,783	130,775
Other Income (loss)
Interest Expense	(261,440)	(265,636)	(270,017)
Interest Income	0
Gain on Sale of Real Estate	0
Total Other Income (Loss)	(261,440)	(265,636)	(270,017)
Net Income (Loss)	(225,100)	$ (155,853)	$ (139,243)
Proportionate share of net income (loss)	0
Ownership interest (as a percent)		50.00%	50.00%
Hamilton Bay Apts | NERA 50%
Other Income (loss)
Proportionate share of net income (loss)	$ (112,550)	$ (77,927)	$ (69,622)
Ownership interest (as a percent)	50.00%
Hamilton Bay Apts | NERA 40%
Other Income (loss)
Proportionate share of net income (loss)	$ 0
Hamilton Minuteman
Revenues
Rental income	992,980	942,539	919,874
Laundry and Sundry Income	1,326		1,731
Total Revenues	994,306	942,539	921,605
Expenses
Administrative	6,557	5,402	8,823
Depreciation and amortization	341,645	329,150	318,673
Management Fees	40,648	38,683	37,869
Operating	96,690	93,492	81,659
Renting	6,202	8,807	8,475
Repairs and Maintenance	84,307	82,769	79,215
Taxes and Insurance	121,365	124,393	119,406
Total Expenses	697,414	682,696	654,120
Income Before Other Income	296,892	259,843	267,485
Other Income (loss)
Interest Expense	(286,628)	(308,725)	(312,614)
Interest Income	0
Gain on Sale of Real Estate	0
Total Other Income (Loss)	(286,628)	(308,725)	(312,614)
Net Income (Loss)	10,264	$ (48,883)	$ (45,130)
Proportionate share of net income (loss)	0
Ownership interest (as a percent)		50.00%	50.00%			50.00%
Hamilton Minuteman | NERA 50%
Other Income (loss)
Proportionate share of net income (loss)	$ 5,132	$ (24,442)	$ (22,565)
Ownership interest (as a percent)	50.00%
Hamilton Minuteman | NERA 40%
Other Income (loss)
Proportionate share of net income (loss)	$ 0
Hamilton on Main Apts
Revenues
Rental income	3,236,490	3,093,045	2,931,793
Laundry and Sundry Income	40,720	44,911	38,668
Total Revenues	3,277,210	3,137,956	2,970,461
Expenses
Administrative	48,753	48,818	54,694
Depreciation and amortization	961,390	955,269	945,014
Management Fees	129,134	122,405	116,157
Operating	328,915	432,352	399,600
Renting	19,354	9,765	23,311
Repairs and Maintenance	558,988	393,665	395,608
Taxes and Insurance	476,185	341,990	367,278
Total Expenses	2,522,719	2,304,264	2,301,662
Income Before Other Income	754,491	833,692	668,799
Other Income (loss)
Interest Expense	(772,201)	(769,579)	(813,948)
Interest Income	0
Other Income (Expense)		96
Gain on Sale of Real Estate	0
Total Other Income (Loss)	(772,201)	(769,483)	(813,948)
Net Income (Loss)	(17,710)	$ 64,209	$ (145,149)
Proportionate share of net income (loss)	0
Ownership interest (as a percent)		50.00%	50.00%				50.00%
Hamilton on Main Apts | NERA 50%
Other Income (loss)
Proportionate share of net income (loss)	$ (8,856)	$ 32,105	$ (72,575)
Ownership interest (as a percent)	50.00%
Hamilton on Main Apts | NERA 40%
Other Income (loss)
Proportionate share of net income (loss)	$ 0
Dexter Park
Revenues
Rental income	14,731,240	14,316,846	13,658,064
Laundry and Sundry Income	108,711	93,064	100,935
Total Revenues	14,839,951	14,409,910	13,758,999
Expenses
Administrative	187,176	225,509	226,551
Depreciation and amortization	3,261,594	3,219,340	5,347,841
Management Fees	317,947	304,868	289,170
Operating	1,165,589	1,234,505	1,233,796
Renting	250,675	122,378	177,251
Repairs and Maintenance	1,391,171	1,134,751	1,181,497
Taxes and Insurance	1,541,959	1,548,439	1,462,398
Total Expenses	8,116,111	7,789,790	9,918,504
Income Before Other Income	6,723,840	6,620,120	3,840,495
Other Income (loss)
Interest Expense	(4,875,137)	(4,937,726)	(5,010,644)
Interest Income	0
Gain on Sale of Real Estate	0
Total Other Income (Loss)	(4,875,137)	(4,937,726)	(5,010,644)
Net Income (Loss)	1,848,703	$ 1,682,396	$ (1,170,149)
Proportionate share of net income (loss)	0
Ownership interest (as a percent)		40.00%	40.00%	40.00%
Dexter Park | NERA 50%
Other Income (loss)
Proportionate share of net income (loss)	0
Dexter Park | NERA 40%
Other Income (loss)
Proportionate share of net income (loss)	$ 739,481	$ 672,958	$ (468,061)
Ownership interest (as a percent)	40.00%