INVESTMENT IN UNCONSOLIDATED JOINT VENTURES (Balance Sheet) (Details)	Mar. 31, 2025 USD ($) property	Dec. 31, 2024 USD ($)	Mar. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	May 31, 2018 USD ($)	Oct. 28, 2009 item	Mar. 07, 2005 item	Mar. 02, 2005 item
ASSETS
Rental Properties	$ 282,997,706	$ 278,516,649
Cash & Cash Equivalents	30,863,737	17,615,940
Rent Receivable	1,094,839	1,220,761
Real Estate Tax Escrow	2,531,833	2,598,073
Prepaid Expenses & Other Assets	8,284,247	8,553,360
Total Assets	385,217,652	393,508,658
LIABILITIES AND PARTNERS' CAPITAL
Mortgage Notes Payable	405,484,379	406,205,910
Accounts Payable & Accrued Expense	10,257,587	9,004,962
Advance Rental Pmts & Security Deposits	10,206,881	10,199,807
Total Liabilities	456,595,436	455,942,560
Partners' Capital	(71,377,784)	(62,433,902)	$ (69,041,100)	$ (65,354,385)
Total Liabilities and Partners' Capital	385,217,652	393,508,658
Distribution and Loss in Excess of investments in Unconsolidated Joint Ventures	(30,646,589)	$ (30,531,881)
Investment Properties
ASSETS
Rental Properties	99,009,808		101,618,965
Cash & Cash Equivalents	7,179,514		5,474,638
Rent Receivable	447,087		394,572
Real Estate Tax Escrow	172,803		348,766
Prepaid Expenses & Other Assets	3,269,659		3,144,925
Total Assets	110,078,871		110,981,866
LIABILITIES AND PARTNERS' CAPITAL
Mortgage Notes Payable	172,254,789		165,937,703
Accounts Payable & Accrued Expense	1,832,638		1,487,645
Advance Rental Pmts & Security Deposits	4,873,333		4,602,710
Total Liabilities	178,960,761		172,028,058
Partners' Capital	(68,881,890)		(61,046,192)
Total Liabilities and Partners' Capital	110,078,871		110,981,866
Investment in Unconsolidated Joint Ventures	1,412,305		1,416,930
Distribution and Loss in Excess of investments in Unconsolidated Joint Ventures	(30,646,583)		(26,819,651)
Total Investment in Unconsolidated Joint Ventures (Net)	$ (29,234,278)		$ (25,402,721)
Total units/ condominiums
Total	690		690
Investment Properties | Apartments
Total units/ condominiums
Total	687		687
Investment Properties | Commercial
Total units/ condominiums
Total	3		3
Hamilton Essex 81
ASSETS
Rental Properties	$ 4,900,308		$ 5,314,109
Cash & Cash Equivalents	1,585,575		1,226,034
Rent Receivable	199,976		170,515
Real Estate Tax Escrow	69,677		81,278
Prepaid Expenses & Other Assets	303,441		315,092
Total Assets	7,058,977		7,107,028
LIABILITIES AND PARTNERS' CAPITAL
Mortgage Notes Payable	9,992,244		9,979,316
Accounts Payable & Accrued Expense	318,276		132,826
Advance Rental Pmts & Security Deposits	384,491		348,654
Total Liabilities	10,695,011		10,460,796
Partners' Capital	(3,636,034)		(3,353,768)
Total Liabilities and Partners' Capital	$ 7,058,977		$ 7,107,028
Partners' Capital %-NERA	50.00%		50.00%
Distribution and Loss in Excess of investments in Unconsolidated Joint Ventures	$ (1,818,017)		$ (1,676,884)
Total units/ condominiums
Total	49		49				48
Hamilton Essex 81 | Apartments
Total units/ condominiums
Total	48		48
Hamilton Essex 81 | Commercial
Total units/ condominiums
Total	1		1
Hamilton Essex Development
ASSETS
Rental Properties	$ 2,580,079		$ 2,582,568
Cash & Cash Equivalents	62,606		58,242
Rent Receivable	68,310		77,243
Prepaid Expenses & Other Assets	31,995		41,185
Total Assets	2,742,990		2,759,238
LIABILITIES AND PARTNERS' CAPITAL
Accounts Payable & Accrued Expense	5,000		1,521
Advance Rental Pmts & Security Deposits			20,660
Total Liabilities	5,000		22,181
Partners' Capital	2,737,990		2,737,057
Total Liabilities and Partners' Capital	$ 2,742,990		$ 2,759,238
Partners' Capital %-NERA	50.00%		50.00%
Investment in Unconsolidated Joint Ventures	$ 1,368,995		$ 1,368,530
Total units/ condominiums
Total	1		1
Hamilton Essex Development | Commercial
Total units/ condominiums
Total	1		1
345 Franklin
ASSETS
Rental Properties	$ 4,083,706		$ 4,395,208
Cash & Cash Equivalents	196,009		118,521
Rent Receivable	9,440		537
Real Estate Tax Escrow	77,702		69,765
Prepaid Expenses & Other Assets	68,612		74,126
Total Assets	4,435,469		4,658,157
LIABILITIES AND PARTNERS' CAPITAL
Mortgage Notes Payable	8,159,819		8,395,372
Accounts Payable & Accrued Expense	111,283		112,431
Advance Rental Pmts & Security Deposits	287,487		275,597
Total Liabilities	8,558,589		8,783,400
Partners' Capital	(4,123,120)		(4,125,243)
Total Liabilities and Partners' Capital	$ 4,435,469		$ 4,658,157
Partners' Capital %-NERA	50.00%		50.00%
Distribution and Loss in Excess of investments in Unconsolidated Joint Ventures	$ (2,061,560)		$ (2,062,622)
Total units/ condominiums
Total	40		40
345 Franklin | Apartments
Total units/ condominiums
Total	40		40
Hamilton 1025
ASSETS
Rental Properties	$ 70,947		$ 74,211
Cash & Cash Equivalents	18,541		19,844
Rent Receivable	827		3,715
Prepaid Expenses & Other Assets	241		233
Total Assets	90,556		98,003
LIABILITIES AND PARTNERS' CAPITAL
Accounts Payable & Accrued Expense	3,936		1,201
Total Liabilities	3,936		1,201
Partners' Capital	86,620		96,802
Total Liabilities and Partners' Capital	$ 90,556		$ 98,003
Partners' Capital %-NERA	50.00%		50.00%
Investment in Unconsolidated Joint Ventures	$ 43,310		$ 48,401
Total units/ condominiums
Total	1		1					176
Units to be retained | item								49
Hamilton 1025 | Apartments
Total units/ condominiums
Total			0
Hamilton 1025 | Commercial
Total units/ condominiums
Total	1		1
Hamilton Minuteman Apts
ASSETS
Rental Properties	$ 3,914,792		$ 4,118,836
Cash & Cash Equivalents	316,267		267,322
Rent Receivable	11,821		254
Real Estate Tax Escrow	25,424		29,481
Prepaid Expenses & Other Assets	54,374		42,429
Total Assets	4,322,678		4,458,322
LIABILITIES AND PARTNERS' CAPITAL
Mortgage Notes Payable	5,947,148		5,938,965
Accounts Payable & Accrued Expense	71,714		67,581
Advance Rental Pmts & Security Deposits	176,548		174,690
Total Liabilities	6,195,410		6,181,236
Partners' Capital	(1,872,732)		(1,722,914)
Total Liabilities and Partners' Capital	$ 4,322,678		$ 4,458,322
Partners' Capital %-NERA	50.00%		50.00%
Distribution and Loss in Excess of investments in Unconsolidated Joint Ventures	$ (936,366)		$ (861,457)
Total units/ condominiums
Total	42		42
Hamilton Minuteman Apts | Apartments
Total units/ condominiums
Total	42		42
Hamilton on Main Apts
ASSETS
Rental Properties	$ 13,438,355		$ 12,594,324
Cash & Cash Equivalents	437,638		1,218,033
Rent Receivable	47,523		20,744
Real Estate Tax Escrow			168,242
Prepaid Expenses & Other Assets	283,795		222,756
Total Assets	14,207,311		14,224,099
LIABILITIES AND PARTNERS' CAPITAL
Mortgage Notes Payable	23,360,218		16,893,312
Accounts Payable & Accrued Expense	380,622		331,127
Advance Rental Pmts & Security Deposits	474,411		474,036
Total Liabilities	24,215,251		17,698,475
Partners' Capital	(10,007,940)		(3,474,376)
Total Liabilities and Partners' Capital	$ 14,207,311		$ 14,224,099
Partners' Capital %-NERA	50.00%		50.00%
Distribution and Loss in Excess of investments in Unconsolidated Joint Ventures	$ (5,003,970)		$ (1,737,188)
Total units/ condominiums
Total	148		148
Hamilton on Main Apts | Apartments
Total units/ condominiums
Total	148		148
Dexter Park
ASSETS
Rental Properties	$ 70,021,621		$ 72,539,709
Cash & Cash Equivalents	4,562,878		2,566,642
Rent Receivable	109,190		121,564
Prepaid Expenses & Other Assets	2,527,201		2,449,104
Total Assets	77,220,890		77,677,019
LIABILITIES AND PARTNERS' CAPITAL
Mortgage Notes Payable	124,795,360		124,730,738		$ 82,000,000
Accounts Payable & Accrued Expense	941,807		840,958
Advance Rental Pmts & Security Deposits	3,550,396		3,309,073
Total Liabilities	129,287,564		128,880,769
Partners' Capital	(52,066,674)		(51,203,750)
Total Liabilities and Partners' Capital	$ 77,220,890		$ 77,677,019
Partners' Capital %-NERA	40.00%		40.00%
Distribution and Loss in Excess of investments in Unconsolidated Joint Ventures	$ (20,826,670)		$ (20,481,500)
Total units/ condominiums
Total	409		409			409
Dexter Park | Apartments
Total units/ condominiums
Total	409		409