INVESTMENT IN UNCONSOLIDATED JOINT VENTURES (Balance Sheet) (Details)	Feb. 01, 2016 item	Dec. 31, 2015 USD ($) item	Feb. 01, 2015 item	Dec. 31, 2014 USD ($) item	Feb. 01, 2014 item	Dec. 31, 2013 USD ($) item	Oct. 28, 2009 USD ($)	Mar. 02, 2005 USD ($) item	Sep. 30, 2004 USD ($) item	Aug. 31, 2004 USD ($) item	Nov. 30, 2001 USD ($) item
ASSETS
Rental Properties		$ 148,681,873		$ 153,973,241		$ 161,872,803
Cash & Cash Equivalents		1,873,377		1,554,873		1,392,611
Rent Receivable		96,371		153,693		142,323
Real Estate Tax Escrow		513,139		642,780		785,471
Prepaid Expenses & Other Assets		2,282,251		2,445,523		2,195,333
Financing & Leasing Fees		595,459		593,147		551,834
Total Assets		154,042,470		159,363,257		166,940,376
LIABILITIES AND PARTNERS' CAPITAL
Mortgage Notes Payable		136,253,447		137,910,871		137,875,515
Accounts Payable and Accrued Expenses		1,254,228		1,169,702		1,493,300
Advance Rental Payments and Security Deposits		3,541,181		3,197,699		3,026,958
Total Liabilities		141,048,856		142,278,272		142,395,773
Partners' Capital		12,993,614		17,084,985		24,544,604
Total Liabilities and Capital		154,042,470		159,363,257		166,940,376
Investment in Unconsolidated Joint Ventures		7,819,162		8,807,868		12,025,144
Distribution and Loss in Excess of investments in Unconsolidated Joint Venture		(2,288,090)		(1,425,369)		(1,252,346)
Total Investment in Unconsolidated Joint Ventures (Net)		5,531,072		$ 7,382,500		$ 10,772,798
NERA 50%
LIABILITIES AND PARTNERS' CAPITAL
Investment in Unconsolidated Joint Ventures		$ 7,819,162
Investment Properties
Total units/ condominiums
Total | item		1,033		1,033		1,033
Units to be retained | item		786		786		786
Units to be sold | item		247		247		247
Units sold | item	242		240		232
Unsold units | item	5		7		15
Units unsold with deposits for future sale | item	2
Investment Properties | Residential buildings
Total units/ condominiums
Total | item		1,030		1,030		1,030
Investment Properties | Commercial
Total units/ condominiums
Total | item		3		3		3
Hamilton Essex 81
ASSETS
Rental Properties		$ 8,419,054		$ 8,732,134		$ 8,764,215
Cash & Cash Equivalents		200,185		759		30,360
Rent Receivable		9,058		44,399		31,426
Real Estate Tax Escrow		33,643		105,474		101,395
Prepaid Expenses & Other Assets		104,975		83,881		77,141
Financing & Leasing Fees		134,443		30,109		46,630
Total Assets		8,901,358		8,996,756		9,051,167
LIABILITIES AND PARTNERS' CAPITAL
Mortgage Notes Payable		10,000,000		8,109,676		8,234,548
Accounts Payable and Accrued Expenses		69,413		49,426		44,299
Advance Rental Payments and Security Deposits		202,470		174,186		167,143
Total Liabilities		10,271,883		8,333,288		8,445,990
Partners' Capital		(1,370,525)		663,468		605,177
Total Liabilities and Capital		8,901,358		$ 8,996,756		$ 9,051,167
Partners' Capital % - NERA				50.00%		50.00%
Investment in Unconsolidated Joint Ventures						$ 302,589
Distribution and Loss in Excess of investments in Unconsolidated Joint Venture		$ (685,263)
Total units/ condominiums
Total | item		49		49		49
Units to be retained | item		49		49		49
Hamilton Essex 81 | NERA 50%
LIABILITIES AND PARTNERS' CAPITAL
Partners' Capital % - NERA		50.00%
Investment in Unconsolidated Joint Ventures				$ 331,734
Hamilton Essex 81 | Residential buildings
Total units/ condominiums
Total | item		48		48		48
Hamilton Essex 81 | Commercial
Total units/ condominiums
Total | item		1		1		1
Hamilton Essex Development
ASSETS
Rental Properties		$ 2,618,666		$ 2,621,495		$ 2,624,325
Cash & Cash Equivalents		16,036		4,216		35,644
Prepaid Expenses & Other Assets		565		559		555
Financing & Leasing Fees				5,639		14,097
Total Assets		2,635,267		2,631,909		2,674,621
LIABILITIES AND PARTNERS' CAPITAL
Mortgage Notes Payable				1,987,830		2,041,146
Accounts Payable and Accrued Expenses		1,700		6,088		6,084
Total Liabilities		1,700		1,993,918		2,047,230
Partners' Capital		2,633,567		637,991		627,391
Total Liabilities and Capital		$ 2,635,267		$ 2,631,909		$ 2,674,621
Partners' Capital % - NERA				50.00%		50.00%
Investment in Unconsolidated Joint Ventures						$ 313,695
Total units/ condominiums
Total | item		1		1		1
Units to be retained | item		1		1		1
Hamilton Essex Development | NERA 50%
LIABILITIES AND PARTNERS' CAPITAL
Partners' Capital % - NERA		50.00%
Investment in Unconsolidated Joint Ventures		$ 1,316,782		$ 318,995
Hamilton Essex Development | Commercial
Total units/ condominiums
Total | item		1		1		1
345 Franklin
ASSETS
Rental Properties		$ 6,780,019		$ 7,132,916		$ 7,494,954
Cash & Cash Equivalents		160,086		111,875		78,691
Rent Receivable		3,738		2,116		1,512
Real Estate Tax Escrow		15,322		17,731		16,970
Prepaid Expenses & Other Assets		37,087		36,911		36,979
Financing & Leasing Fees		83,231		89,890		96,548
Total Assets		7,079,483		7,391,439		7,725,654
LIABILITIES AND PARTNERS' CAPITAL
Mortgage Notes Payable		10,000,000		10,000,000		10,000,000
Accounts Payable and Accrued Expenses		63,267		51,122		60,638
Advance Rental Payments and Security Deposits		221,871		191,054		169,709
Total Liabilities		10,285,138		10,242,176		10,230,347
Partners' Capital		(3,205,655)		(2,850,737)		(2,504,692)
Total Liabilities and Capital		$ 7,079,483		$ 7,391,439		$ 7,725,654
Partners' Capital % - NERA				50.00%		50.00%					50.00%
Investment in Unconsolidated Joint Ventures											$ 1,533,000
Distribution and Loss in Excess of investments in Unconsolidated Joint Venture				$ (1,425,369)		$ (1,252,346)
Total units/ condominiums
Total | item		40		40		40					40
Units to be retained | item		40		40		40
345 Franklin | NERA 50%
LIABILITIES AND PARTNERS' CAPITAL
Partners' Capital % - NERA		50.00%
Distribution and Loss in Excess of investments in Unconsolidated Joint Venture		$ (1,602,828)
345 Franklin | Residential buildings
Total units/ condominiums
Total | item		40		40		40
Hamilton 1025
ASSETS
Rental Properties		$ 4,939,620		$ 5,156,752		$ 5,389,763
Cash & Cash Equivalents		27,721		23,008		9,085
Rent Receivable		4,164		2,111		7,970
Real Estate Tax Escrow		80,196		75,027		80,767
Prepaid Expenses & Other Assets		56,047		45,704		44,737
Financing & Leasing Fees		4,567		9,594		14,619
Total Assets		5,112,315		5,312,196		5,546,941
LIABILITIES AND PARTNERS' CAPITAL
Mortgage Notes Payable		4,733,318		4,806,039		4,869,583
Accounts Payable and Accrued Expenses		28,735		28,751		50,279
Advance Rental Payments and Security Deposits		91,649		96,142		92,057
Total Liabilities		4,853,702		4,930,932		5,011,919
Partners' Capital		258,613		381,264		535,022
Total Liabilities and Capital		$ 5,112,315		$ 5,312,196		$ 5,546,941
Partners' Capital % - NERA				50.00%		50.00%		50.00%
Investment in Unconsolidated Joint Ventures						$ 267,511		$ 2,352,000
Total units/ condominiums
Total | item		176		176		176		176
Units to be retained | item		48		49		49
Units to be sold | item		127		127		127
Units sold | item	127		127		127
Hamilton 1025 | NERA 50%
LIABILITIES AND PARTNERS' CAPITAL
Partners' Capital % - NERA		50.00%
Investment in Unconsolidated Joint Ventures		$ 129,305		$ 190,632
Hamilton 1025 | Residential buildings
Total units/ condominiums
Total | item		175		175		175
Hamilton 1025 | Commercial
Total units/ condominiums
Total | item		1		1		1
Hamilton Bay Sales
ASSETS
Rental Properties		$ 573,138		$ 811,043		$ 1,766,132
Cash & Cash Equivalents		7,728		28,636		36,423
Rent Receivable		0		1,770		1,251
Prepaid Expenses & Other Assets		12,879		198,603		101,507
Total Assets		593,745		1,040,052		1,905,314
LIABILITIES AND PARTNERS' CAPITAL
Accounts Payable and Accrued Expenses		12,605		21,454		16,993
Advance Rental Payments and Security Deposits		5,799		10,999		24,687
Total Liabilities		18,404		32,453		41,680
Partners' Capital		575,341		1,007,599		1,863,634
Total Liabilities and Capital		$ 593,745		$ 1,040,052		$ 1,905,314
Partners' Capital % - NERA				50.00%		50.00%
Investment in Unconsolidated Joint Ventures						$ 931,817
Total units/ condominiums
Total | item		120		120		120
Units to be retained | item				0
Units to be sold | item		120		120		120
Units sold | item	115		113		105
Unsold units | item	5		7		15
Units unsold with deposits for future sale | item	2
Hamilton Bay Sales | NERA 50%
LIABILITIES AND PARTNERS' CAPITAL
Partners' Capital % - NERA		50.00%
Investment in Unconsolidated Joint Ventures		$ 287,670		$ 503,800
Hamilton Bay Sales | Residential buildings
Total units/ condominiums
Total | item		120		120		120
Hamilton Bay Apts
ASSETS
Rental Properties		$ 6,174,512		$ 6,416,511		$ 6,680,834
Cash & Cash Equivalents		545		32,379		17,861
Rent Receivable		241		945		2,766
Real Estate Tax Escrow		51,218		46,978		45,679
Prepaid Expenses & Other Assets		63,345		46,290		31,435
Financing & Leasing Fees		7,157		13,519		19,881
Total Assets		6,297,018		6,556,622		6,798,456
LIABILITIES AND PARTNERS' CAPITAL
Mortgage Notes Payable		4,504,340		4,574,002		4,639,848
Accounts Payable and Accrued Expenses		14,594		10,193		7,570
Advance Rental Payments and Security Deposits		95,552		99,043		85,413
Total Liabilities		4,614,486		4,683,238		4,732,831
Partners' Capital		1,682,532		1,873,384		2,065,625
Total Liabilities and Capital		$ 6,297,018		$ 6,556,622		$ 6,798,456
Partners' Capital % - NERA				50.00%		50.00%
Investment in Unconsolidated Joint Ventures						$ 1,032,812
Total units/ condominiums
Total | item		48		48		48
Units to be retained | item		48		48		48
Hamilton Bay Apts | NERA 50%
LIABILITIES AND PARTNERS' CAPITAL
Partners' Capital % - NERA		50.00%
Investment in Unconsolidated Joint Ventures		$ 841,265		$ 936,692
Hamilton Bay Apts | Residential buildings
Total units/ condominiums
Total | item		48		48		48
Hamilton Minuteman
ASSETS
Rental Properties		$ 6,352,363		$ 6,551,038		$ 6,778,029
Cash & Cash Equivalents		39,184		66,705		33,921
Rent Receivable		668
Real Estate Tax Escrow		40,499		40,532		41,268
Prepaid Expenses & Other Assets		41,201		44,736		50,721
Financing & Leasing Fees		4,044		8,012		11,981
Total Assets		6,477,959		6,711,023		6,915,919
LIABILITIES AND PARTNERS' CAPITAL
Mortgage Notes Payable		5,212,864		5,292,511		5,362,109
Accounts Payable and Accrued Expenses		55,116		52,095		73,289
Advance Rental Payments and Security Deposits		113,084		95,642		74,615
Total Liabilities		5,381,064		5,440,248		5,510,013
Partners' Capital		1,096,895		1,270,775		1,405,906
Total Liabilities and Capital		$ 6,477,959		$ 6,711,023		$ 6,915,919
Partners' Capital % - NERA				50.00%		50.00%			50.00%
Investment in Unconsolidated Joint Ventures						$ 702,953			$ 5,075,000
Total units/ condominiums
Total | item		42		42		42			42
Units to be retained | item		42		42		42
Hamilton Minuteman | NERA 50%
LIABILITIES AND PARTNERS' CAPITAL
Partners' Capital % - NERA		50.00%
Investment in Unconsolidated Joint Ventures		$ 548,446		$ 635,388
Hamilton Minuteman | Residential buildings
Total units/ condominiums
Total | item		42		42		42
Hamilton on Main Apts
ASSETS
Rental Properties		$ 18,574,474		$ 19,408,575		$ 20,253,587
Cash & Cash Equivalents		235,748		158,515		189,004
Rent Receivable		11,684		7,495		5,697
Real Estate Tax Escrow		81,815		62,290		72,308
Prepaid Expenses & Other Assets		67,497		71,703		322,667
Financing & Leasing Fees		139,111		155,162		7,716
Total Assets		19,110,329		19,863,740		20,850,980
LIABILITIES AND PARTNERS' CAPITAL
Mortgage Notes Payable		16,900,000		16,900,000		15,317,643
Accounts Payable and Accrued Expenses		216,091		156,578		290,008
Advance Rental Payments and Security Deposits		328,676		305,809		291,825
Total Liabilities		17,444,767		17,362,387		15,899,476
Partners' Capital		1,665,562		2,501,353		4,951,504
Total Liabilities and Capital		$ 19,110,329		$ 19,863,740		$ 20,850,980
Partners' Capital % - NERA				50.00%		50.00%				50.00%
Investment in Unconsolidated Joint Ventures						$ 2,475,752				$ 8,000,000
Total units/ condominiums
Total | item		148		148		148				280
Units to be retained | item		148		148		148
Hamilton on Main Apts | NERA 50%
LIABILITIES AND PARTNERS' CAPITAL
Partners' Capital % - NERA		50.00%
Investment in Unconsolidated Joint Ventures		$ 832,780		$ 1,250,676
Hamilton on Main Apts | Residential buildings
Total units/ condominiums
Total | item		148		148		148
Dexter Park
ASSETS
Rental Properties		$ 94,250,027		$ 97,142,777		$ 102,120,964
Cash & Cash Equivalents		1,186,144		1,128,780		961,622
Rent Receivable		66,818		94,857		91,701
Real Estate Tax Escrow		210,446		294,748		427,084
Prepaid Expenses & Other Assets		1,898,655		1,917,136		1,529,591
Financing & Leasing Fees		222,906		281,222		340,362
Total Assets		97,834,996		100,859,520		105,471,324
LIABILITIES AND PARTNERS' CAPITAL
Mortgage Notes Payable		84,902,925		86,240,813		87,410,638
Accounts Payable and Accrued Expenses		792,707		793,995		944,140
Advance Rental Payments and Security Deposits		2,482,080		2,224,824		2,121,509
Total Liabilities		88,177,712		89,259,632		90,476,287
Partners' Capital		9,657,284		11,599,888		14,995,037
Total Liabilities and Capital		$ 97,834,996		$ 100,859,520		$ 105,471,324
Partners' Capital % - NERA				40.00%		40.00%	40.00%
Investment in Unconsolidated Joint Ventures						$ 5,998,015	$ 15,925,000
Total units/ condominiums
Total | item		409		409		409
Units to be retained | item		409		409		409
Dexter Park | NERA 40%
LIABILITIES AND PARTNERS' CAPITAL
Partners' Capital % - NERA		40.00%
Investment in Unconsolidated Joint Ventures		$ 3,862,914		$ 4,639,953
Dexter Park | Residential buildings
Total units/ condominiums
Total | item		409		409		409