INVESTMENT IN UNCONSOLIDATED JOINT VENTURES (Details 2) (USD $)	Jun. 30, 2013 item	Dec. 31, 2012	Jun. 30, 2012	Dec. 31, 2011	Jun. 30, 2013 Hamilton Essex 81 item	Jun. 30, 2012 Hamilton Essex 81 item	Jun. 30, 2013 Hamilton Essex 81 NERA 50%	Jun. 30, 2012 Hamilton Essex 81 NERA 50%	Jun. 30, 2013 Hamilton Essex 81 Apartments item	Jun. 30, 2012 Hamilton Essex 81 Apartments item	Jun. 30, 2013 Hamilton Essex 81 Commercial item	Jun. 30, 2012 Hamilton Essex 81 Commercial item	Jun. 30, 2013 Hamilton Essex Development item	Jun. 30, 2012 Hamilton Essex Development item	Jun. 30, 2013 Hamilton Essex Development NERA 50%	Jun. 30, 2012 Hamilton Essex Development NERA 50%	Jun. 30, 2013 Hamilton Essex Development Commercial item	Jun. 30, 2012 Hamilton Essex Development Commercial item	Jun. 30, 2013 345 Franklin item	Jun. 30, 2012 345 Franklin item	Nov. 30, 2001 345 Franklin item	Jun. 30, 2013 345 Franklin NERA 50%	Jun. 30, 2012 345 Franklin NERA 50%	Jun. 30, 2013 345 Franklin Apartments item	Jun. 30, 2012 345 Franklin Apartments item	Jun. 30, 2013 Hamilton 1025 item	Jun. 30, 2012 Hamilton 1025 item	Mar. 02, 2005 Hamilton 1025 item	Jun. 30, 2013 Hamilton 1025 NERA 50%	Jun. 30, 2012 Hamilton 1025 NERA 50%	Jun. 30, 2013 Hamilton 1025 Apartments item	Jun. 30, 2012 Hamilton 1025 Apartments item	Jun. 30, 2013 Hamilton 1025 Commercial item	Jun. 30, 2012 Hamilton 1025 Commercial item	Jun. 30, 2013 Hamilton Bay Sales item	Jun. 30, 2012 Hamilton Bay Sales item	Apr. 30, 2008 Hamilton Bay Sales item	Jun. 30, 2013 Hamilton Bay Sales NERA 50%	Jun. 30, 2012 Hamilton Bay Sales NERA 50%	Jun. 30, 2013 Hamilton Bay Sales Apartments item	Jun. 30, 2012 Hamilton Bay Sales Apartments item	Jun. 30, 2013 Hamilton Bay Apartments item	Jun. 30, 2012 Hamilton Bay Apartments item	Oct. 03, 2005 Hamilton Bay Apartments item	Jun. 30, 2013 Hamilton Bay Apartments NERA 50%	Jun. 30, 2012 Hamilton Bay Apartments NERA 50%	Jun. 30, 2013 Hamilton Bay Apartments Apartments item	Jun. 30, 2012 Hamilton Bay Apartments Apartments item	Jun. 30, 2013 Hamilton Minuteman item	Jun. 30, 2012 Hamilton Minuteman item	Sep. 30, 2004 Hamilton Minuteman item	Jun. 30, 2013 Hamilton Minuteman NERA 50%	Jun. 30, 2012 Hamilton Minuteman NERA 50%	Jun. 30, 2013 Hamilton Minuteman Apartments item	Jun. 30, 2012 Hamilton Minuteman Apartments item	Jun. 30, 2013 Hamilton on Main item	Jun. 30, 2012 Hamilton on Main item	May 31, 2008 Hamilton on Main item	Aug. 31, 2004 Hamilton on Main item	Jun. 30, 2013 Hamilton on Main NERA 50%	Jun. 30, 2012 Hamilton on Main NERA 50%	Jun. 30, 2013 Hamilton on Main Apartments item	Jun. 30, 2012 Hamilton on Main Apartments item	Jun. 30, 2013 Dexter Park item	Jun. 30, 2012 Dexter Park item	Oct. 28, 2009 Dexter Park item	Jun. 30, 2013 Dexter Park NERA 40%	Jun. 30, 2012 Dexter Park NERA 40%	Jun. 30, 2013 Dexter Park Apartments item	Jun. 30, 2012 Dexter Park Apartments item	Jun. 30, 2013 Total item	Jun. 30, 2012 Total item	Jun. 30, 2013 Total NERA 50%	Jun. 30, 2012 Total NERA 50%	Jun. 30, 2013 Total NERA 40%	Jun. 30, 2012 Total NERA 40%	Jun. 30, 2013 Total Apartments item	Jun. 30, 2012 Total Apartments item	Jun. 30, 2013 Total Commercial item	Jun. 30, 2012 Total Commercial item
ASSETS
Rental Properties	$ 94,292,069	$ 94,973,600			$ 8,947,591	$ 9,261,771							$ 2,616,965	$ 2,611,819					$ 7,686,993	$ 8,049,593						$ 5,505,467	$ 5,744,197								$ 1,805,125	$ 1,882,240						$ 6,827,232	$ 7,118,237						$ 6,919,386	$ 7,152,206						$ 20,659,589	$ 21,534,347							$ 104,817,498	$ 110,257,477						$ 165,785,845	$ 173,611,888
Cash & Cash Equivalents	3,291,685	6,981,906	5,181,834	4,050,157	3,147	58,404							29,108	24,262					231,329	26,170						9,023	296								23,732	24,634						10,077	17,487						25,303	18,057						174,000	51,045							659,245	577,044						1,164,964	797,399
Rent Receivable	429,492	475,083			51,080	70,337													8,863	9,048						6,872	12,082								4,062	2,563						4,887	5,692						9,600	4,380						10,730	10,138							104,164	132,465						200,257	246,705
Real Estate Tax Escrow	347,420	449,652			83,964	49,442													23,711	21,015						74,507	69,257															53,440	93,063						34,783	42,103						68,934	107,470							420,641	483,938						759,979	866,288
Investors Partner Loan Receivables					97,138														61,036							4,572									153,336																													1,149,915							1,465,997
Contra Investors Partner Loan					(97,138)														(61,036)							(4,572)									(153,336)																													(1,149,915)							(1,465,997)
Prepaid Expenses & Other Assets	2,767,011	3,073,890			75,717	85,426							1,153	1,110					27,615	91,415						42,202	97,825								123,516	161,820						24,192	104,087						51,529	76,573						228,073	273,435							1,464,682	1,306,813						2,038,677	2,198,503
Financing & Leasing Fees	1,770,603	1,135,936			55,373	65,493							1,081	1,747					99,877	12,247						17,132	22,159								4,000	4,037						23,062	29,424						13,965	17,934						11,150	18,012							370,020	429,336						595,661	600,388
Total Assets	118,140,170	121,538,490			9,216,871	9,590,873							2,648,307	2,638,938					8,078,388	8,209,487						5,655,204	5,945,816								1,960,434	2,075,295						6,942,889	7,367,990						7,054,565	7,311,253						21,152,475	21,994,446							107,836,250	113,187,073						170,545,384	178,321,171
LIABILITIES AND PARTNERS' CAPITAL
Mortgage Notes Payable	131,671,632	138,055,522			8,292,287	8,406,631							2,067,378	2,118,990					10,000,000	6,936,102						4,901,467	4,964,768								1,668,000	1,668,000						4,670,319	4,730,815						5,397,023	5,466,352						15,462,916	15,748,668							87,999,131	89,166,547						140,458,521	139,206,873
Investors Partner Loan Payables					97,138														61,036							4,572									153,336																													1,149,915							1,465,997
Contra Investors Partner Loan					(97,138)														(61,036)							(4,572)									(153,336)																													(1,149,915)							(1,465,997)
Accounts Payable & Accrued Exp	2,018,815	2,361,942			50,228	61,165							5,461	5,811					19,140	118,416						51,107	49,520								18,669	18,661						8,192	54,146						71,192	85,621						196,455	211,249							1,019,021	884,807						1,439,465	1,489,395
Advance Rental Pymts & Security Dep	3,944,741	3,636,704			176,827	187,355													175,850	147,570						93,472	85,841								29,033	24,499						96,673	87,189						66,703	68,827						321,725	262,993							2,059,402	1,919,814						3,019,685	2,784,087
Total Liabilities	137,635,188	144,054,168			8,519,343	8,655,151							2,072,839	2,124,801					10,194,990	7,202,087						5,046,047	5,100,129								1,715,701	1,711,161						4,775,184	4,872,149						5,534,918	5,620,800						15,981,097	16,222,911							91,077,554	91,971,168						144,917,671	143,480,356
Partners' Capital	(19,495,018)	(22,515,678)	(21,677,705)	(21,310,852)	697,529	935,722							575,469	514,137					(2,116,602)	1,007,400						609,157	845,687								244,733	364,134						2,167,705	2,495,641						1,519,648	1,690,453						5,171,379	5,771,535							16,758,697	21,215,906						25,627,712	34,840,816
Total Liabilities and Partners' Capital	118,140,170	121,538,490			9,216,871	9,590,873							2,648,307	2,638,938					8,078,388	8,209,487						5,655,204	5,945,816								1,960,434	2,075,295						6,942,889	7,367,990						7,054,565	7,311,253						21,152,475	21,994,446							107,836,250	113,187,073						170,545,384	178,321,171
Share of partners capital in investments							$ 348,764	$ 467,861							$ 287,734	$ 257,068						$ (1,058,301)	$ 503,700						$ 304,578	$ 422,844								$ 122,366	$ 182,067						$ 1,083,852	$ 1,247,920						$ 759,824	$ 845,227							$ 2,585,689	$ 2,885,768						$ 6,703,479	$ 8,486,362			$ 11,137,986	$ 15,298,817	$ 4,434,508	$ 6,812,455	$ 6,703,479	$ 8,486,362
Percentage of ownership interest							50.00%	50.00%							50.00%	50.00%					50.00%	50.00%	50.00%					50.00%	50.00%	50.00%								50.00%	50.00%					50.00%	50.00%	50.00%					50.00%	50.00%	50.00%						50.00%	50.00%	50.00%					40.00%	40.00%	40.00%					50.00%	50.00%	40.00%	40.00%
Total units/ condominiums
Total					49	49			48	48	1	1	1	1			1	1	40	40	40			40	40	176	176	176			175	175	1	1	120	120	20			120	120	48	48	168			48	48	42	42	42			42	42	148	148		280			148	148	409	409	409			409	409	1,033	1,033					1,030	1,030	3	3
Units to be retained					49	49							1	1					40	40						49	49	49														48	48	48					42	42						148	148							409	409						786	786
Units to be sold																										127	127								120	120																																			247	247
Units sold	0																									127	127	127							105	105																						137													232	232
Unsold units																																			15	15																																			15	15