INVESTMENT IN UNCONSOLIDATED JOINT VENTURES (Balance Sheet) (Details)	Jun. 30, 2016 USD ($) property	Dec. 31, 2015 USD ($)	Jun. 30, 2015 USD ($) property	Oct. 28, 2009 USD ($) item	Oct. 03, 2005 USD ($) item	Mar. 07, 2005 item	Mar. 02, 2005 USD ($) item	Sep. 30, 2004 USD ($) item	Aug. 31, 2004 USD ($) item	Nov. 30, 2001 USD ($) item
LIABILITIES AND PARTNERS' CAPITAL
Investment in Unconsolidated Joint Ventures	$ 7,079,962	$ 7,819,162
Distribution and Loss in Excess of investments in Unconsolidated Joint Venture	(2,468,307)	$ (2,288,090)
Investment Properties
ASSETS
Rental Properties	145,999,494		$ 151,316,712
Cash & Cash Equivalents	1,640,161		1,719,138
Rent Receivable	183,110		188,006
Real Estate Tax Escrow	539,506		668,176
Prepaid Expenses & Other Assets	2,690,531		2,340,334
Total Assets	151,052,802		156,232,366
LIABILITIES AND PARTNERS' CAPITAL
Mortgage Notes Payable	134,906,750		136,507,135
Accounts Payable and Accrued Expenses	986,745		1,118,568
Advance Rental Payments and Security Deposits	4,142,392		3,863,685
Total Liabilities	140,035,887		141,489,388
Partners' Capital	11,016,915		14,742,978
Total Liabilities and Capital	151,052,802		156,232,366
Investment in Unconsolidated Joint Ventures	7,079,962		7,866,077
Distribution and Loss in Excess of investments in Unconsolidated Joint Venture	(2,468,307)		(1,534,258)
Total Investment in Unconsolidated Joint Ventures (Net)	$ 4,611,655		$ 6,331,819
Total units/ condominiums
Total | property	1,033		1,033
Units to be retained | property	786		786
Units to be sold | property	247		247
Units sold | property	245		240
Unsold units | property	2		7
Investment Properties | Residential buildings
Total units/ condominiums
Total | property	1,030		1,030
Investment Properties | Commercial
Total units/ condominiums
Total | property	3		3
Hamilton Essex 81
LIABILITIES AND PARTNERS' CAPITAL
Mortgage Notes Payable	$ 9,872,451
Total units/ condominiums
Total | item						48
Hamilton Essex 81 | NERA 50%
ASSETS
Rental Properties	8,233,823		$ 8,564,474
Cash & Cash Equivalents	111,271		29,625
Rent Receivable	46,713		25,517
Real Estate Tax Escrow	83,814		123,085
Prepaid Expenses & Other Assets	105,562		92,967
Total Assets	8,581,183		8,835,668
LIABILITIES AND PARTNERS' CAPITAL
Mortgage Notes Payable	9,872,451		8,020,648
Accounts Payable and Accrued Expenses	54,553		59,786
Advance Rental Payments and Security Deposits	196,372		199,886
Total Liabilities	10,123,376		8,280,320
Partners' Capital	(1,542,193)		555,348
Total Liabilities and Capital	$ 8,581,183		$ 8,835,668
Partners' Capital % - NERA	50.00%		50.00%
Investment in Unconsolidated Joint Ventures			$ 277,674
Distribution and Loss in Excess of investments in Unconsolidated Joint Venture	$ (771,097)
Total units/ condominiums
Total | property	49		49
Units to be retained | property	49		49
Hamilton Essex 81 | Residential buildings | NERA 50%
Total units/ condominiums
Total | property	48		48
Hamilton Essex 81 | Commercial | NERA 50%
Total units/ condominiums
Total | property	1		1
Hamilton Essex Development | NERA 50%
ASSETS
Rental Properties	$ 2,617,251		$ 2,620,081
Cash & Cash Equivalents	42,323		33,530
Prepaid Expenses & Other Assets	1,351
Total Assets	2,660,925		2,653,611
LIABILITIES AND PARTNERS' CAPITAL
Mortgage Notes Payable			1,959,763
Accounts Payable and Accrued Expenses	850		5,308
Total Liabilities	850		1,965,071
Partners' Capital	2,660,075		688,540
Total Liabilities and Capital	$ 2,660,925		$ 2,653,611
Partners' Capital % - NERA	50.00%		50.00%
Investment in Unconsolidated Joint Ventures	$ 1,330,037		$ 344,270
Total units/ condominiums
Total | property	1		1
Units to be retained | property	1		1
Hamilton Essex Development | Commercial | NERA 50%
Total units/ condominiums
Total | property	1		1
345 Franklin
LIABILITIES AND PARTNERS' CAPITAL
Mortgage Notes Payable	$ 9,920,098
Partners' Capital % - NERA										50.00%
Investment in Unconsolidated Joint Ventures										$ 1,533,000
Total units/ condominiums
Total | item										40
345 Franklin | NERA 50%
ASSETS
Rental Properties	6,607,281		$ 6,951,074
Cash & Cash Equivalents	183,078		116,046
Rent Receivable	8,347		4,123
Real Estate Tax Escrow	16,713		17,330
Prepaid Expenses & Other Assets	37,218		51,470
Total Assets	6,852,637		7,140,043
LIABILITIES AND PARTNERS' CAPITAL
Mortgage Notes Payable	9,920,098		9,913,439
Accounts Payable and Accrued Expenses	67,207		64,628
Advance Rental Payments and Security Deposits	259,754		230,492
Total Liabilities	10,247,059		10,208,559
Partners' Capital	(3,394,422)		(3,068,516)
Total Liabilities and Capital	$ 6,852,637		$ 7,140,043
Partners' Capital % - NERA	50.00%		50.00%
Distribution and Loss in Excess of investments in Unconsolidated Joint Venture	$ (1,697,210)		$ (1,534,258)
Total units/ condominiums
Total | property	40		40
Units to be retained | property	40		40
345 Franklin | Residential buildings | NERA 50%
Total units/ condominiums
Total | property	40		40
Hamilton 1025
LIABILITIES AND PARTNERS' CAPITAL
Mortgage Notes Payable	$ 4,693,693
Partners' Capital % - NERA							50.00%
Investment in Unconsolidated Joint Ventures							$ 2,352,000
Total units/ condominiums
Total | item							176
Units to be retained | item							49
Units sold | item							127
Hamilton 1025 | NERA 50%
ASSETS
Rental Properties	4,829,662		$ 5,039,485
Cash & Cash Equivalents	288		6,348
Rent Receivable	18,732		5,178
Real Estate Tax Escrow	83,537		72,812
Prepaid Expenses & Other Assets	68,884		54,129
Total Assets	5,001,103		5,177,952
LIABILITIES AND PARTNERS' CAPITAL
Mortgage Notes Payable	4,693,693		4,762,744
Accounts Payable and Accrued Expenses	28,749		27,358
Advance Rental Payments and Security Deposits	89,470		97,276
Total Liabilities	4,811,912		4,887,378
Partners' Capital	189,191		290,574
Total Liabilities and Capital	$ 5,001,103		$ 5,177,952
Partners' Capital % - NERA	50.00%		50.00%
Investment in Unconsolidated Joint Ventures	$ 94,594		$ 145,287
Total units/ condominiums
Total | property	176		176
Units to be retained | property	49		49
Units to be sold | property	127		127
Units sold | property	127		127
Hamilton 1025 | Residential buildings | NERA 50%
Total units/ condominiums
Total | property	175		175
Hamilton 1025 | Commercial | NERA 50%
Total units/ condominiums
Total | property	1		1
Hamilton Bay Sales | NERA 50%
ASSETS
Rental Properties	$ 241,741		$ 793,069
Cash & Cash Equivalents	28,695		8,106
Rent Receivable	2,400		1,605
Prepaid Expenses & Other Assets	1,891		19,977
Total Assets	274,727		822,757
LIABILITIES AND PARTNERS' CAPITAL
Accounts Payable and Accrued Expenses	1,395		20,207
Advance Rental Payments and Security Deposits	2,373		5,810
Total Liabilities	3,768		26,017
Partners' Capital	270,959		796,740
Total Liabilities and Capital	$ 274,727		$ 822,757
Partners' Capital % - NERA	50.00%		50.00%
Investment in Unconsolidated Joint Ventures	$ 135,479		$ 398,370
Total units/ condominiums
Total | property	120		120
Units to be sold | property	120		120
Units sold | property	118		113
Unsold units | property	2		7
Hamilton Bay Sales | Residential buildings | NERA 50%
Total units/ condominiums
Total | property	120		120
Hamilton Bay Apts
LIABILITIES AND PARTNERS' CAPITAL
Mortgage Notes Payable	$ 4,463,701
Partners' Capital % - NERA					50.00%
Investment in Unconsolidated Joint Ventures					$ 2,500,000
Total units/ condominiums
Total | item					168
Units to be retained | item					48
Units sold | item					120
Hamilton Bay Apts | NERA 50%
ASSETS
Rental Properties	6,017,735		$ 6,288,296
Cash & Cash Equivalents	4,943		829
Rent Receivable	12,257		2,221
Real Estate Tax Escrow	37,780		56,520
Prepaid Expenses & Other Assets	74,021		55,989
Total Assets	6,146,736		6,403,855
LIABILITIES AND PARTNERS' CAPITAL
Mortgage Notes Payable	4,463,701		4,528,267
Accounts Payable and Accrued Expenses	9,232		14,768
Advance Rental Payments and Security Deposits	98,765		95,435
Total Liabilities	4,571,698		4,638,470
Partners' Capital	1,575,038		1,765,385
Total Liabilities and Capital	$ 6,146,736		$ 6,403,855
Partners' Capital % - NERA	50.00%		50.00%
Investment in Unconsolidated Joint Ventures	$ 787,518		$ 882,693
Total units/ condominiums
Total | property	48		48
Units to be retained | property	48		48
Hamilton Bay Apts | Residential buildings | NERA 50%
Total units/ condominiums
Total | property	48		48
Hamilton Minuteman
LIABILITIES AND PARTNERS' CAPITAL
Mortgage Notes Payable	$ 5,169,696
Partners' Capital % - NERA								50.00%
Investment in Unconsolidated Joint Ventures								$ 5,075,000
Total units/ condominiums
Total | item								42
Hamilton Minuteman | NERA 50%
ASSETS
Rental Properties	6,200,372		$ 6,421,497
Cash & Cash Equivalents	170		42,200
Rent Receivable			152
Real Estate Tax Escrow	46,263		39,006
Prepaid Expenses & Other Assets	159,492		43,472
Total Assets	6,406,297		6,546,327
LIABILITIES AND PARTNERS' CAPITAL
Mortgage Notes Payable	5,169,696		5,246,816
Accounts Payable and Accrued Expenses	57,401		47,865
Advance Rental Payments and Security Deposits	110,976		96,548
Total Liabilities	5,338,073		5,391,229
Partners' Capital	1,068,224		1,155,098
Total Liabilities and Capital	$ 6,406,297		$ 6,546,327
Partners' Capital % - NERA	50.00%		50.00%
Investment in Unconsolidated Joint Ventures	$ 534,111		$ 577,549
Total units/ condominiums
Total | property	42		42
Units to be retained | property	42		42
Hamilton Minuteman | Residential buildings | NERA 50%
Total units/ condominiums
Total | property	42		42
Hamilton on Main Apts
LIABILITIES AND PARTNERS' CAPITAL
Mortgage Notes Payable	$ 16,768,914
Partners' Capital % - NERA									50.00%
Investment in Unconsolidated Joint Ventures									$ 8,000,000
Total units/ condominiums
Total | item									280
Units sold | item									137
Hamilton on Main Apts | NERA 50%
ASSETS
Rental Properties	18,146,220		$ 19,007,097
Cash & Cash Equivalents	172,519		208,411
Rent Receivable	13,230		15,289
Real Estate Tax Escrow	37,745		94,677
Prepaid Expenses & Other Assets	109,424		82,262
Total Assets	18,479,138		19,407,736
LIABILITIES AND PARTNERS' CAPITAL
Mortgage Notes Payable	16,768,914		16,752,864
Accounts Payable and Accrued Expenses	130,506		154,122
Advance Rental Payments and Security Deposits	357,657		337,614
Total Liabilities	17,257,077		17,244,600
Partners' Capital	1,222,061		2,163,136
Total Liabilities and Capital	$ 18,479,138		$ 19,407,736
Partners' Capital % - NERA	50.00%		50.00%
Investment in Unconsolidated Joint Ventures	$ 611,030		$ 1,081,568
Total units/ condominiums
Total | property	148		148
Units to be retained | property	148		148
Hamilton on Main Apts | Residential buildings | NERA 50%
Total units/ condominiums
Total | property	148		148
Dexter Park
LIABILITIES AND PARTNERS' CAPITAL
Mortgage Notes Payable	$ 84,018,197
Partners' Capital % - NERA				40.00%
Investment in Unconsolidated Joint Ventures				$ 15,925,000
Total units/ condominiums
Total | item				409
Dexter Park | NERA 40%
ASSETS
Rental Properties	93,105,409		$ 95,631,639
Cash & Cash Equivalents	1,096,874		1,274,043
Rent Receivable	81,431		133,921
Real Estate Tax Escrow	233,654		264,746
Prepaid Expenses & Other Assets	2,132,688		1,940,068
Total Assets	96,650,056		99,244,417
LIABILITIES AND PARTNERS' CAPITAL
Mortgage Notes Payable	84,018,197		85,322,594
Accounts Payable and Accrued Expenses	636,852		724,526
Advance Rental Payments and Security Deposits	3,027,025		2,800,624
Total Liabilities	87,682,074		88,847,744
Partners' Capital	8,967,982		10,396,673
Total Liabilities and Capital	$ 96,650,056		$ 99,244,417
Partners' Capital % - NERA	40.00%		40.00%
Investment in Unconsolidated Joint Ventures	$ 3,587,193		$ 4,158,667
Total units/ condominiums
Total | property	409		409
Units to be retained | property	409		409
Dexter Park | Residential buildings | NERA 40%
Total units/ condominiums
Total | property	409		409