INVESTMENT IN UNCONSOLIDATED JOINT VENTURES (Details 3) (USD $)	3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended			3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended			3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended			3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended			3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended			3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended			3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013 Hamilton Essex 81	Jun. 30, 2012 Hamilton Essex 81	Jun. 30, 2013 Hamilton Essex 81	Jun. 30, 2012 Hamilton Essex 81	Jun. 30, 2013 Hamilton Essex 81 NERA 50%	Jun. 30, 2012 Hamilton Essex 81 NERA 50%	Jun. 30, 2013 Hamilton Essex 81 NERA 50%	Jun. 30, 2012 Hamilton Essex 81 NERA 50%	Jun. 30, 2013 Hamilton Essex Development	Jun. 30, 2012 Hamilton Essex Development	Jun. 30, 2013 Hamilton Essex Development	Jun. 30, 2012 Hamilton Essex Development	Jun. 30, 2013 Hamilton Essex Development NERA 50%	Jun. 30, 2012 Hamilton Essex Development NERA 50%	Jun. 30, 2013 Hamilton Essex Development NERA 50%	Jun. 30, 2012 Hamilton Essex Development NERA 50%	Jun. 30, 2013 345 Franklin	Jun. 30, 2012 345 Franklin	Jun. 30, 2013 345 Franklin	Jun. 30, 2012 345 Franklin	Nov. 30, 2001 345 Franklin	Jun. 30, 2013 345 Franklin NERA 50%	Jun. 30, 2012 345 Franklin NERA 50%	Jun. 30, 2013 345 Franklin NERA 50%	Jun. 30, 2012 345 Franklin NERA 50%	Jun. 30, 2013 Hamilton 1025	Jun. 30, 2012 Hamilton 1025	Jun. 30, 2013 Hamilton 1025	Jun. 30, 2012 Hamilton 1025	Mar. 02, 2005 Hamilton 1025	Jun. 30, 2013 Hamilton 1025 NERA 50%	Jun. 30, 2012 Hamilton 1025 NERA 50%	Jun. 30, 2013 Hamilton 1025 NERA 50%	Jun. 30, 2012 Hamilton 1025 NERA 50%	Jun. 30, 2013 Hamilton Bay Apartments	Jun. 30, 2012 Hamilton Bay Apartments	Jun. 30, 2013 Hamilton Bay Apartments	Jun. 30, 2012 Hamilton Bay Apartments	Oct. 03, 2005 Hamilton Bay Apartments	Jun. 30, 2013 Hamilton Bay Apartments NERA 50%	Jun. 30, 2012 Hamilton Bay Apartments NERA 50%	Jun. 30, 2013 Hamilton Bay Apartments NERA 50%	Jun. 30, 2012 Hamilton Bay Apartments NERA 50%	Jun. 30, 2013 Hamilton Bay Sales	Jun. 30, 2012 Hamilton Bay Sales	Jun. 30, 2013 Hamilton Bay Sales	Jun. 30, 2012 Hamilton Bay Sales	Jun. 30, 2013 Hamilton Bay Sales NERA 50%	Jun. 30, 2012 Hamilton Bay Sales NERA 50%	Jun. 30, 2013 Hamilton Bay Sales NERA 50%	Jun. 30, 2012 Hamilton Bay Sales NERA 50%	Jun. 30, 2013 Hamilton Minuteman	Jun. 30, 2012 Hamilton Minuteman	Jun. 30, 2013 Hamilton Minuteman	Jun. 30, 2012 Hamilton Minuteman	Sep. 30, 2004 Hamilton Minuteman	Jun. 30, 2013 Hamilton Minuteman NERA 50%	Jun. 30, 2012 Hamilton Minuteman NERA 50%	Jun. 30, 2013 Hamilton Minuteman NERA 50%	Jun. 30, 2012 Hamilton Minuteman NERA 50%	Jun. 30, 2013 Hamilton on Main	Jun. 30, 2012 Hamilton on Main	Jun. 30, 2013 Hamilton on Main	Jun. 30, 2012 Hamilton on Main	Aug. 31, 2004 Hamilton on Main	Jun. 30, 2013 Hamilton on Main NERA 50%	Jun. 30, 2012 Hamilton on Main NERA 50%	Jun. 30, 2013 Hamilton on Main NERA 50%	Jun. 30, 2012 Hamilton on Main NERA 50%	Jun. 30, 2013 Dexter Park	Jun. 30, 2012 Dexter Park	Jun. 30, 2013 Dexter Park	Jun. 30, 2012 Dexter Park	Oct. 28, 2009 Dexter Park	Jun. 30, 2013 Dexter Park NERA 40%	Jun. 30, 2012 Dexter Park NERA 40%	Jun. 30, 2013 Dexter Park NERA 40%	Jun. 30, 2012 Dexter Park NERA 40%	Jun. 30, 2013 Total	Jun. 30, 2012 Total	Jun. 30, 2013 Total	Jun. 30, 2012 Total	Jun. 30, 2013 Total NERA 50%	Jun. 30, 2012 Total NERA 50%	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 NERA 40%	Jun. 30, 2012 Total NERA 40%
Revenues
Rental income	$ 8,904,762	$ 8,594,881	$ 17,828,769	$ 17,235,744	$ 335,464	$ 333,509	$ 663,919	$ 626,002					$ 71,896	$ 72,046	$ 143,792	$ 144,092					$ 311,745	$ 287,052	$ 616,034	$ 578,703						$ 221,666	$ 211,699	$ 441,883	$ 421,727						$ 222,162	$ 216,498	$ 441,443	$ 436,161						$ 61,864	$ 59,714	$ 121,472	$ 111,192					$ 216,932	$ 201,973	$ 432,789	$ 398,676						$ 676,242	$ 649,487	$ 1,353,188	$ 1,297,371						$ 3,171,661	$ 3,051,260	$ 6,331,670	$ 6,062,838						$ 5,289,631	$ 5,083,238	$ 10,546,189	$ 10,076,761
Laundry and sundry income	98,000	96,955	193,686	189,094	5,151	3,540	8,997	7,073													1,288	600	1,933	1,188																																464	83	675	491						7,510	4,617	17,281	9,980						24,997	21,355	46,429	43,855						39,411	30,195	75,316	62,587
Total Revenues	9,002,762	8,691,836	18,022,455	17,424,838	340,615	337,049	672,916	633,075					71,896	72,046	143,792	144,092					313,033	287,652	617,968	579,891						221,666	211,699	441,883	421,727						222,162	216,498	441,443	436,161						61,864	59,714	121,472	111,192					217,396	202,056	433,464	399,167						683,752	654,104	1,370,469	1,307,350						3,196,658	3,072,615	6,378,099	6,106,693						5,329,041	5,113,433	10,621,505	10,139,348
Expenses
Administrative	697,238	406,665	1,149,855	892,158	6,074	4,330	9,928	7,606					386	547	703	1,114					8,699	8,864	14,431	15,366						2,124	2,189	3,805	2,480						3,669	15,351	7,551	23,711						2,813	1,895	3,586	4,103					2,042	1,982	2,465	2,931						9,769	12,303	18,408	26,098						66,845	66,572	113,724	109,434						102,422	114,031	174,601	192,842
Depreciation and amortization	1,479,860	1,534,033	2,933,991	3,037,517	106,494	103,742	212,066	206,865					2,245	3,243	4,488	6,485					110,055	112,159	215,739	222,140						60,128	63,477	120,215	126,593						76,840	74,723	153,638	149,087						20,035	19,736	41,098	39,472					79,225	79,613	157,933	158,546						244,233	240,010	488,767	476,667						1,440,022	1,438,955	2,878,479	2,870,999						2,139,276	2,135,656	4,272,422	4,256,855
Management fees					13,762	14,208	26,015	27,026					2,876	2,882	5,752	5,764					12,707	12,115	25,782	24,116						9,227	8,333	18,186	16,885						9,422	8,599	17,887	16,992						2,649	2,537	4,987	4,587					8,538	7,978	17,076	16,016						28,298	26,698	57,339	52,207						68,497	66,306	133,507	129,568						155,978	149,656	306,530	293,161
Operating	814,609	702,327	2,246,784	1,928,077	28,483	22,810	63,549	53,132													14,190	14,338	40,044	29,481						452	570	712	635						195	217	617	905						382	256	1,962	927					18,737	13,014	41,947	37,721						77,185	73,937	191,181	178,324						235,835	243,755	564,660	547,102						375,460	368,896	904,672	848,227
Renting	26,815	52,979	56,666	99,362	200	150	9,550	2,090													23		1,788	141						3,220	659	3,925	2,328						6,845	2,377	7,250	3,271						1,425	535	1,425	1,450					1,703	1,083	4,042	1,993						1,994	4,556	3,305	6,580						15,098	10,807	26,654	41,798						30,508	20,169	57,939	59,652
Repairs and maintenance	1,515,934	1,274,441	2,597,213	2,326,786	41,851	32,326	64,094	54,878					3,150	4,150	3,700	4,525					24,593	28,474	38,179	44,319						81,300	76,398	157,409	146,192						72,781	68,837	147,694	133,219						23,216	15,410	45,986	32,177					15,442	17,521	25,537	29,497						79,801	103,533	165,706	197,892						272,433	285,183	454,017	429,952						614,565	631,833	1,102,323	1,072,650
Taxes and insurance	1,204,862	1,022,677	2,365,792	2,152,870	55,878	50,693	111,759	100,878					12,209	12,844	24,407	25,186					28,069	25,296	56,255	50,561						38,381	36,671	77,131	73,592						35,468	40,902	71,147	81,677						10,389	11,918	20,619	23,560					31,082	25,458	61,948	50,868						84,473	83,186	169,290	168,309						346,742	364,513	742,955	744,643						642,690	651,482	1,335,512	1,319,275
Total Expenses	6,113,940	5,354,730	12,094,175	11,145,559	252,742	228,259	496,961	452,475					20,865	23,666	39,051	43,074					198,337	201,245	392,218	386,125						194,832	188,296	381,383	368,706						205,220	211,006	405,784	408,862						60,909	52,287	119,663	106,276					156,769	146,648	310,947	297,573						525,753	544,223	1,093,996	1,106,077						2,445,472	2,476,092	4,913,995	4,873,495						4,060,899	4,071,723	8,153,999	8,042,662
Income Before Other Income and Discontinued Operation	2,888,822	3,337,106	5,928,280	6,279,279	87,873	108,790	175,955	180,601					51,031	48,380	104,741	101,018					114,696	86,406	225,750	193,766						26,834	23,403	60,499	53,021						16,941	5,492	35,658	27,299						955	7,426	1,809	4,916					60,627	55,408	122,516	101,594						157,999	109,981	276,473	201,274						751,186	596,522	1,464,104	1,233,197						1,268,143	1,041,709	2,467,506	2,096,686
Other Income (loss)
Interest expense	(1,762,647)	(1,911,952)	(3,603,716)	(3,846,413)	(122,047)	(124,068)	(243,202)	(248,551)					(14,668)	(15,034)	(29,266)	(30,327)					(138,605)	(121,314)	(257,547)	(245,913)						(70,998)	(71,826)	(141,481)	(143,846)						(66,707)	(67,577)	(132,973)	(135,267)						(24,507)	(24,445)	(48,689)	(48,871)					(78,076)	(79,013)	(155,538)	(158,370)						(205,633)	(208,988)	(409,587)	(418,707)						(1,252,195)	(1,267,892)	(2,495,453)	(2,540,630)						(1,973,436)	(1,980,156)	(3,913,736)	(3,970,481)
Interest Income	351	553	715	1,192																	13	12	26	24						2	21	2	41															41	53	86	114																							57		57							113	86	171	178
Interest Income from Note																																																911	1,635	2,007	3,442																																911	1,635	2,007	3,442
Other Income (Expenses)																					(68,588)		(68,588)																																																												(68,588)		(68,588)
Total Other Income (loss)	(2,098,628)	(2,312,625)	(4,256,190)	(4,649,565)	(122,047)	(124,068)	(243,202)	(248,551)					(14,668)	(15,034)	(29,266)	(30,327)					(207,180)	(121,302)	(326,109)	(245,889)						(70,996)	(71,805)	(141,478)	(143,805)						(66,707)	(67,577)	(132,973)	(135,267)						(23,555)	(22,757)	(46,596)	(45,315)					(78,076)	(79,013)	(155,538)	(158,370)						(205,633)	(208,988)	(409,587)	(418,707)						(1,252,138)	(1,267,892)	(2,495,396)	(2,540,630)						(2,041,000)	(1,978,435)	(3,980,146)	(3,966,860)
Net Income	4,469,116	1,047,262	5,370,742	1,674,214	(34,174)	(15,278)	(67,247)	(67,950)					36,362	33,346	75,475	70,691					(92,484)	(34,895)	(100,359)	(52,123)						(44,162)	(48,402)	(80,979)	(90,784)						(49,765)	(62,085)	(97,315)	(107,968)						(22,600)	(15,331)	(44,787)	(40,398)					(17,449)	(23,605)	(33,022)	(56,776)						(47,633)	(99,107)	(133,114)	(217,433)						(500,951)	(671,370)	(1,031,292)	(1,307,433)						(772,857)	(936,726)	(1,512,639)	(1,870,174)
Proportionate share of net loss	$ (336,333)	$ (401,226)	$ (653,190)	$ (804,344)					$ (17,087)	$ (7,639)	$ (33,623)	$ (33,975)					$ 18,181	$ 16,673	$ 37,737	$ 35,345						$ (46,242)	$ (17,448)	$ (50,180)	$ (26,061)						$ (22,081)	$ (24,201)	$ (40,489)	$ (45,392)						$ (24,883)	$ (31,043)	$ (48,657)	$ (53,984)					$ (11,300)	$ (7,665)	$ (22,393)	$ (20,199)						$ (8,725)	$ (11,802)	$ (16,511)	$ (28,388)						$ (23,817)	$ (49,553)	$ (66,557)	$ (108,717)						$ (200,380)	$ (268,548)	$ (412,517)	$ (522,973)	$ (336,333)	$ (401,226)	$ (653,190)	$ (804,344)	$ (135,953)	$ (132,678)	$ (240,673)	$ (281,371)	$ (200,380)	$ (268,548)	$ (412,517)	$ (522,973)
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%	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%	40.00%	40.00%					50.00%	50.00%	50.00%	50.00%	40.00%	40.00%	40.00%	40.00%