INVESTMENT IN UNCONSOLIDATED JOINT VENTURES (Income) (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Oct. 28, 2009	Oct. 03, 2005	Mar. 02, 2005	Sep. 30, 2004	Aug. 31, 2004	Nov. 30, 2001
Investment Properties
Revenues
Rental income	$ 5,846,090	$ 6,025,406	$ 11,928,889	$ 12,116,129
Laundry and Sundry Income	39,873	44,100	78,303	86,033
Total Revenues	5,885,963	6,069,506	12,007,192	12,202,162
Expenses
Administrative	69,986	75,361	149,264	168,714
Depreciation and amortization	1,500,793	1,482,711	2,990,008	2,954,638
Management Fees	173,057	178,086	352,138	353,799
Operating	398,192	390,264	930,496	894,324
Renting	60,000	50,986	98,717	90,035
Repairs and Maintenance	752,629	760,666	1,373,361	1,409,909
Taxes and Insurance	742,450	715,582	1,503,213	1,436,671
Total Expenses	3,697,107	3,653,656	7,397,197	7,308,090
Income Before Other Income	2,188,856	2,415,850	4,609,995	4,894,072
Other Income (loss)
Interest Expense	(1,630,225)	(1,787,741)	(3,287,595)	(3,581,247)
Interest Income		5		9
Gain on Sale of Real Estate	1,659,885	67,462	2,370,644	235,470
Total Other Income (Loss)	29,660	(1,720,274)	(916,951)	(3,345,768)
Net Income (Loss)	2,218,516	695,576	3,693,044	1,548,304
Proportionate share of net income (loss)	1,058,225	288,478	1,731,062	658,082
Investment Properties | NERA 50%
Other Income (loss)
Proportionate share of net income (loss)	854,096	51,238	1,269,232	193,802
Investment Properties | NERA 40%
Other Income (loss)
Proportionate share of net income (loss)	204,129	237,240	461,830	464,280
Hamilton Essex 81
Revenues
Rental income		369,120
Laundry and Sundry Income		4,375
Total Revenues		373,495
Expenses
Administrative		4,545
Depreciation and amortization		113,230
Management Fees		15,366
Operating		19,855
Renting		6,299
Repairs and Maintenance		42,149
Taxes and Insurance		57,873
Total Expenses		259,317
Income Before Other Income		114,178
Other Income (loss)
Interest Expense		(71,039)
Total Other Income (Loss)		(71,039)
Net Income (Loss)		43,139
Hamilton Essex 81 | NERA 50%
Revenues
Rental income	322,090		723,284	767,917
Laundry and Sundry Income	4,059		7,590	8,357
Total Revenues	326,149		730,874	776,274
Expenses
Administrative	4,729		9,929	20,096
Depreciation and amortization	113,698		226,998	225,194
Management Fees	14,598		31,978	30,050
Operating	16,070		39,707	50,358
Renting	5,794		9,516	6,839
Repairs and Maintenance	28,820		49,551	76,084
Taxes and Insurance	60,634		121,101	115,308
Total Expenses	244,343		488,780	523,929
Income Before Other Income	81,806		242,094	252,345
Other Income (loss)
Interest Expense	(85,403)		(164,394)	(141,647)
Total Other Income (Loss)	(85,403)		(164,394)	(141,647)
Net Income (Loss)	(3,597)		77,700	110,698
Proportionate share of net income (loss)	$ (1,798)	$ 21,570	$ 38,851	$ 55,350
Ownership interest (as a percent)	50.00%	50.00%	50.00%	50.00%
Hamilton Essex Development | NERA 50%
Revenues
Rental income	$ 60,000	$ 60,000	$ 120,000	$ 120,000
Total Revenues	60,000	60,000	120,000	120,000
Expenses
Administrative	425	464	850	889
Depreciation and amortization	707	707	1,415	1,415
Management Fees	2,400	2,400	4,800	4,800
Repairs and Maintenance	3,180	3,150	3,180	3,150
Taxes and Insurance	14,549	15,431	29,080	30,602
Total Expenses	21,261	22,152	39,325	40,856
Income Before Other Income	38,739	37,848	80,675	79,144
Other Income (loss)
Net Income (Loss)	38,739	37,848	80,675	79,144
Proportionate share of net income (loss)	$ 19,370	$ 18,924	$ 40,338	$ 39,572
Ownership interest (as a percent)	50.00%	50.00%	50.00%	50.00%
345 Franklin
Other Income (loss)
Ownership interest (as a percent)										50.00%
345 Franklin | NERA 50%
Revenues
Rental income	$ 354,750	$ 358,043	$ 727,167	$ 724,962
Laundry and Sundry Income	1,192	507	2,136	2,097
Total Revenues	355,942	358,550	729,303	727,059
Expenses
Administrative	7,649	6,211	14,039	16,198
Depreciation and amortization	87,013	86,915	173,435	173,831
Management Fees	13,506	15,988	29,464	30,825
Operating	13,275	16,542	36,420	36,666
Renting	10,112	10,355	12,248	10,540
Repairs and Maintenance	32,130	12,627	51,430	29,334
Taxes and Insurance	30,253	30,407	66,970	64,423
Total Expenses	193,938	179,045	384,006	361,817
Income Before Other Income	162,004	179,505	345,297	365,242
Other Income (loss)
Interest Expense	(98,390)	(99,505)	(197,793)	(199,009)
Total Other Income (Loss)	(98,390)	(99,505)	(197,793)	(199,009)
Net Income (Loss)	63,614	80,000	147,504	166,233
Proportionate share of net income (loss)	$ 31,806	$ 40,000	$ 73,751	$ 83,116
Ownership interest (as a percent)	50.00%	50.00%	50.00%	50.00%
Hamilton 1025
Other Income (loss)
Ownership interest (as a percent)							50.00%
Hamilton 1025 | NERA 50%
Revenues
Rental income	$ 106,802	$ 237,156	$ 237,200	$ 472,476
Total Revenues	106,802	237,156	237,200	472,476
Expenses
Administrative	1,220	1,319	2,184	2,745
Depreciation and amortization	45,625	58,999	91,251	118,064
Management Fees	4,039	8,402	8,803	17,927
Operating	138	220	100	585
Renting	270	1,789	332	1,789
Repairs and Maintenance	60,214	78,417	115,717	155,898
Taxes and Insurance	27,188	43,260	56,565	86,209
Total Expenses	138,694	192,406	274,952	383,217
Income Before Other Income	(31,892)	44,750	(37,752)	89,259
Other Income (loss)
Interest Expense	(274)	(69,173)	(777)	(138,688)
Interest Income		5		9
Gain on Sale of Real Estate	228,573		939,332
Total Other Income (Loss)	228,299	(69,168)	938,555	(138,679)
Net Income (Loss)	196,407	(24,418)	900,803	(49,420)
Proportionate share of net income (loss)	$ 98,204	$ (12,209)	$ 450,401	$ (24,710)
Ownership interest (as a percent)	50.00%	50.00%	50.00%	50.00%
Hamilton Bay Sales | NERA 50%
Revenues
Rental income	$ 2,415	$ 11,025	$ 5,282	$ 27,690
Total Revenues	2,415	11,025	5,282	27,690
Expenses
Administrative	1,325	1,085	2,148	2,984
Depreciation and amortization	(39,670)	6,291	(38,440)	12,584
Management Fees	73	406	207	1,076
Operating	19	48	38	200
Renting	119		181
Repairs and Maintenance	1,118	5,551	3,100	13,569
Taxes and Insurance	351	2,855	1,213	7,071
Total Expenses	(36,665)	16,236	(31,553)	37,484
Income Before Other Income	39,080	(5,211)	36,835	(9,794)
Other Income (loss)
Interest Expense		(11)	(2)	(59)
Gain on Sale of Real Estate	93,392	67,462	93,392	235,470
Total Other Income (Loss)	93,392	67,451	93,390	235,411
Net Income (Loss)	132,472	62,240	130,225	225,617
Proportionate share of net income (loss)	$ 66,236	$ 31,120	$ 65,113	$ 112,809
Ownership interest (as a percent)	50.00%	50.00%	50.00%	50.00%
Hamilton Bay Apts
Other Income (loss)
Ownership interest (as a percent)						50.00%
Hamilton Bay Apts | NERA 50%
Revenues
Rental income	$ 175,926	$ 245,530	$ 397,962	$ 494,357
Total Revenues	175,926	245,530	397,962	494,357
Expenses
Administrative	2,131	3,890	5,197	5,870
Depreciation and amortization	121,346	79,462	202,598	158,855
Management Fees	6,219	9,362	14,869	19,604
Operating	721	714	1,374	1,008
Renting	119	477	181	954
Repairs and Maintenance	86,223	100,814	192,826	200,605
Taxes and Insurance	41,255	42,070	87,349	83,979
Total Expenses	258,014	236,789	504,394	470,875
Income Before Other Income	(82,088)	8,741	(106,432)	23,482
Other Income (loss)
Interest Expense	(216)	(65,065)	(41,741)	(130,978)
Gain on Sale of Real Estate	1,337,920		1,337,920
Total Other Income (Loss)	1,337,704	(65,065)	1,296,179	(130,978)
Net Income (Loss)	1,255,616	(56,324)	1,189,747	(107,496)
Proportionate share of net income (loss)	$ 627,807	$ (28,162)	$ 594,874	$ (53,749)
Ownership interest (as a percent)	50.00%	50.00%	50.00%	50.00%
Hamilton Minuteman
Revenues
Rental income		$ 243,193
Laundry and Sundry Income		53
Total Revenues		243,246
Expenses
Administrative		1,293
Depreciation and amortization		84,896
Management Fees		9,588
Operating		22,568
Renting		947
Repairs and Maintenance		57,281
Taxes and Insurance		30,075
Total Expenses		206,648
Income Before Other Income		36,598
Other Income (loss)
Interest Expense		(76,031)
Total Other Income (Loss)		(76,031)
Net Income (Loss)		(39,433)
Ownership interest (as a percent)								50.00%
Hamilton Minuteman | NERA 50%
Revenues
Rental income	$ 260,009		$ 516,798	$ 491,754
Laundry and Sundry Income	595		1,270	299
Total Revenues	260,604		518,068	492,053
Expenses
Administrative	1,206		2,411	2,600
Depreciation and amortization	87,136		173,810	169,581
Management Fees	9,326		20,466	19,922
Operating	24,128		52,003	46,231
Renting	2,783		4,104	4,802
Repairs and Maintenance	18,432		39,286	110,941
Taxes and Insurance	31,450		62,894	59,499
Total Expenses	174,461		354,974	413,576
Income Before Other Income	86,143		163,094	78,477
Other Income (loss)
Interest Expense	(58,928)		(118,019)	(152,347)
Total Other Income (Loss)	(58,928)		(118,019)	(152,347)
Net Income (Loss)	27,215		45,075	(73,870)
Proportionate share of net income (loss)	$ 13,607	$ (19,717)	$ 22,538	$ (36,936)
Ownership interest (as a percent)	50.00%	50.00%	50.00%	50.00%
Hamilton on Main Apts
Other Income (loss)
Ownership interest (as a percent)									50.00%
Hamilton on Main Apts | NERA 50%
Revenues
Rental income	$ 828,931	$ 806,669	$ 1,655,234	$ 1,604,997
Laundry and Sundry Income	9,421	10,051	18,368	20,634
Total Revenues	838,352	816,720	1,673,602	1,625,631
Expenses
Administrative	6,219	8,623	17,237	20,131
Depreciation and amortization	247,902	239,165	490,218	477,061
Management Fees	31,979	32,337	66,082	64,262
Operating	79,032	81,925	183,191	151,015
Renting	11,372	4,013	21,398	9,516
Repairs and Maintenance	163,301	131,233	327,427	227,253
Taxes and Insurance	108,603	128,012	218,416	255,822
Total Expenses	648,408	625,308	1,323,969	1,205,060
Income Before Other Income	189,944	191,412	349,633	420,571
Other Income (loss)
Interest Expense	(192,214)	(191,988)	(382,898)	(383,871)
Total Other Income (Loss)	(192,214)	(191,988)	(382,898)	(383,871)
Net Income (Loss)	(2,270)	(576)	(33,265)	36,700
Proportionate share of net income (loss)	$ (1,135)	$ (288)	$ (16,633)	$ 18,350
Ownership interest (as a percent)	50.00%	50.00%	50.00%	50.00%
Dexter Park
Other Income (loss)
Ownership interest (as a percent)					40.00%
Dexter Park | NERA 40%
Revenues
Rental income	$ 3,735,167	$ 3,694,670	$ 7,545,962	$ 7,411,976
Laundry and Sundry Income	24,606	29,114	48,939	54,646
Total Revenues	3,759,773	3,723,784	7,594,901	7,466,622
Expenses
Administrative	45,082	47,931	95,269	97,201
Depreciation and amortization	837,036	813,046	1,668,723	1,618,053
Management Fees	90,917	84,237	175,469	165,333
Operating	264,809	248,392	617,663	608,261
Renting	29,431	27,106	50,757	55,595
Repairs and Maintenance	359,211	329,444	590,844	593,075
Taxes and Insurance	428,167	365,599	859,625	733,758
Total Expenses	2,054,653	1,915,755	4,058,350	3,871,276
Income Before Other Income	1,705,120	1,808,029	3,536,551	3,595,346
Other Income (loss)
Interest Expense	(1,194,800)	(1,214,929)	(2,381,971)	(2,434,648)
Total Other Income (Loss)	(1,194,800)	(1,214,929)	(2,381,970)	(2,434,648)
Net Income (Loss)	510,320	593,100	1,154,581	1,160,698
Proportionate share of net income (loss)	$ 204,129	$ 237,240	$ 461,830	$ 464,280
Ownership interest (as a percent)	40.00%	40.00%	40.00%	40.00%