INVESTMENT IN UNCONSOLIDATED JOINT VENTURES (Income) (Details) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	May 31, 2018
Revenues
Rental Income									$ 73,892,393	$ 67,560,662	$ 62,175,592
Laundry and Sundry Income									588,975	733,064	462,862
Total Revenues	$ 19,727,004	$ 18,961,642	$ 18,101,036	$ 17,691,686	$ 17,703,006	$ 17,078,383	$ 16,931,928	$ 16,580,409	74,481,368	68,293,726	62,638,454
Expenses
Administrative									2,900,432	2,731,284	2,476,593
Depreciation and Amortization									16,773,045	16,373,429	16,671,076
Expenses for construction, architectural services and supervision of capital projects									7,748,910	7,324,692	6,471,250
Renting									1,004,666	639,235	1,241,298
Repairs and Maintenance									13,366,079	11,270,589	10,069,325
Taxes and Insurance									9,954,214	9,149,837	8,942,469
Total Expenses									55,666,521	50,205,580	48,395,954
Income Before Other Income (Expense)	4,725,871	4,899,261	4,738,350	4,451,365	5,139,477	4,560,797	4,610,922	3,776,950	18,814,847	18,088,146	14,242,500
Other Income (Loss)
Interest expense									(15,723,733)	(15,045,477)	(13,629,463)
Other income (expenses)										(874,517)	(2,745,979)
Interest income									4,486,603	1,055,338	87
Total Other Income (Expense)	(2,426,126)	(2,724,035)	(2,513,746)	(2,696,990)	(2,996,831)	(3,565,573)	(4,367,937)	(3,434,532)	(10,360,897)	(14,364,873)	(16,942,663)
Net Income (Loss)	2,299,745	$ 2,175,226	$ 2,224,604	$ 1,754,375	2,142,646	$ 995,224	$ 242,985	$ 342,418	8,453,950	3,723,273	(2,700,163)
Mortgage Notes Payable	408,660,292				410,966,199				408,660,292	410,966,199
Investment Properties
Revenues
Rental Income									25,556,720	23,550,304	20,837,208
Laundry and Sundry Income									164,319	231,093	154,646
Total Revenues									25,721,039	23,781,397	20,991,854
Expenses
Administrative									432,128	364,839	403,509
Depreciation and Amortization									5,922,564	6,028,686	6,016,613
Management Fees									699,067	662,035	575,162
Expenses for construction, architectural services and supervision of capital projects									2,213,893	2,004,434	1,781,069
Renting									282,165	210,499	711,979
Repairs and Maintenance									2,951,720	2,801,051	2,849,104
Taxes and Insurance									3,858,813	3,700,391	3,539,050
Total Expenses									16,360,350	15,771,935	15,876,486
Income Before Other Income (Expense)									9,360,689	8,009,462	5,115,368
Other Income (Loss)
Interest expense									(7,149,981)	(6,842,685)	(6,658,595)
Other income (expenses)									(213,240)	(81,360)
Interest income									30,788		1,222
Total Other Income (Expense)									(7,332,433)	(6,924,045)	(6,657,373)
Net Income (Loss)									2,028,256	1,085,417	(1,542,005)
Proportionate share of net income (loss)									876,233	499,783	(567,308)
Mortgage Notes Payable	165,969,481				166,090,968				165,969,481	166,090,968	166,203,707
Investment Properties | NERA 50%
Other Income (Loss)
Proportionate share of net income (loss)									324,677	328,088	247,478
Investment Properties | NERA 40%
Other Income (Loss)
Proportionate share of net income (loss)									551,556	171,695	(814,786)
Hamilton Essex 81
Revenues
Rental Income									1,831,196	1,640,480	1,609,397
Laundry and Sundry Income									3,691	17,652	12,761
Total Revenues									1,834,887	1,658,132	1,622,158
Expenses
Administrative									20,455	19,543	76,338
Depreciation and Amortization									470,253	478,538	479,512
Management Fees									72,806	75,216	52,617
Expenses for construction, architectural services and supervision of capital projects									284,173	229,528	168,160
Renting									61,559	25,926	101,328
Repairs and Maintenance									178,816	185,275	159,593
Taxes and Insurance									281,346	266,024	261,145
Total Expenses									1,369,408	1,280,050	1,298,693
Income Before Other Income (Expense)									465,479	378,082	323,465
Other Income (Loss)
Interest expense									(752,933)	(412,329)	(246,339)
Interest income									6,830
Total Other Income (Expense)									(746,103)	(412,329)	(246,339)
Net Income (Loss)									(280,624)	(34,247)	77,126
Mortgage Notes Payable	9,975,869				9,962,080				9,975,869	9,962,080	9,948,291
Hamilton Essex 81 | NERA 50%
Other Income (Loss)
Proportionate share of net income (loss)									(140,312)	(17,124)	38,563
Hamilton Essex Development
Revenues
Rental Income									241,884	296,313	391,878
Total Revenues									241,884	296,313	391,878
Expenses
Administrative									3,020	6,548	2,875
Depreciation and Amortization									11,709	11,709	20,298
Management Fees									10,489	11,468	12,922
Repairs and Maintenance										3,180	520
Taxes and Insurance									61,557	63,139	60,764
Total Expenses									86,775	96,044	97,379
Income Before Other Income (Expense)									155,109	200,269	294,499
Other Income (Loss)
Interest income									375
Total Other Income (Expense)									375
Net Income (Loss)									155,484	200,269	294,499
Hamilton Essex Development | NERA 50%
Other Income (Loss)
Proportionate share of net income (loss)									77,741	100,134	147,249
345 Franklin
Revenues
Rental Income									1,709,429	1,516,329	1,360,472
Laundry and Sundry Income									115	245	1,494
Total Revenues									1,709,544	1,516,574	1,361,966
Expenses
Administrative									30,349	33,656	31,566
Depreciation and Amortization									346,856	346,793	343,834
Management Fees									67,116	59,715	54,178
Expenses for construction, architectural services and supervision of capital projects									89,139	76,108	58,667
Renting									52,686	32,332	54,672
Repairs and Maintenance									150,845	184,057	129,548
Taxes and Insurance									193,215	182,098	175,183
Total Expenses									930,206	914,759	847,648
Income Before Other Income (Expense)									779,338	601,815	514,318
Other Income (Loss)
Interest expense									(344,847)	(351,175)	(359,036)
Interest income									1,593
Total Other Income (Expense)									(343,254)	(351,175)	(359,036)
Net Income (Loss)									436,084	250,640	155,282
Mortgage Notes Payable	8,452,812				8,676,945				8,452,812	8,676,945	8,892,331
345 Franklin | NERA 50%
Other Income (Loss)
Proportionate share of net income (loss)									218,041	125,319	77,641
Hamilton 1025
Revenues
Rental Income									98,734	102,802	98,135
Total Revenues									98,734	102,802	98,135
Expenses
Administrative									3,300	2,793	2,812
Depreciation and Amortization									3,264	3,264	3,264
Management Fees									4,011	4,160	3,801
Expenses for construction, architectural services and supervision of capital projects									807	1,344	334
Renting									13
Taxes and Insurance									17,165	18,513	19,467
Total Expenses									28,560	30,074	29,678
Income Before Other Income (Expense)									70,174	72,728	68,457
Other Income (Loss)
Interest income									161
Total Other Income (Expense)									161
Net Income (Loss)									70,335	72,729	68,458
Hamilton 1025 | NERA 50%
Other Income (Loss)
Proportionate share of net income (loss)									35,167	36,365	34,229
Hamilton Minuteman
Revenues
Rental Income									1,334,398	1,212,854	1,139,865
Laundry and Sundry Income									(148)		3,913
Total Revenues									1,334,250	1,212,854	1,143,778
Expenses
Administrative									20,021	14,579	16,450
Depreciation and Amortization									339,605	338,919	338,362
Management Fees									53,347	48,548	45,541
Expenses for construction, architectural services and supervision of capital projects									105,254	129,232	98,115
Renting									5,801	9,873	4,419
Repairs and Maintenance									94,262	106,689	120,626
Taxes and Insurance									147,197	153,117	144,533
Total Expenses									765,487	800,957	768,046
Income Before Other Income (Expense)									568,763	411,897	375,732
Other Income (Loss)
Interest expense									(237,749)	(237,851)	(237,845)
Interest income									2,592
Total Other Income (Expense)									(235,157)	(237,851)	(237,845)
Net Income (Loss)									333,606	174,046	137,887
Mortgage Notes Payable	5,936,919				5,928,736				5,936,919	5,928,736	5,920,552
Hamilton Minuteman | NERA 50%
Other Income (Loss)
Proportionate share of net income (loss)									166,802	87,023	68,944
Hamilton on Main Apts
Revenues
Rental Income									3,879,734	3,644,802	3,370,478
Laundry and Sundry Income									23,163	77,589	38,697
Total Revenues									3,902,897	3,722,391	3,409,175
Expenses
Administrative									92,589	68,948	68,008
Depreciation and Amortization									1,065,353	1,081,096	1,089,225
Management Fees									152,943	146,115	131,221
Expenses for construction, architectural services and supervision of capital projects									455,086	400,489	432,061
Renting									54,856	51,327	90,842
Repairs and Maintenance									625,687	626,909	624,475
Taxes and Insurance									527,665	513,699	451,937
Total Expenses									2,974,179	2,888,583	2,887,769
Income Before Other Income (Expense)									928,718	833,808	521,406
Other Income (Loss)
Interest expense									(788,376)	(759,704)	(759,698)
Other income (expenses)									(213,240)	(81,360)
Interest income									7,376
Total Other Income (Expense)									(994,240)	(841,064)	(759,698)
Net Income (Loss)									(65,522)	(7,256)	(238,292)
Mortgage Notes Payable	16,889,299				16,873,248				16,889,299	16,873,248	16,857,197
Hamilton on Main Apts | NERA 50%
Other Income (Loss)
Proportionate share of net income (loss)									(32,762)	(3,629)	(119,147)
Dexter Park
Revenues
Rental Income									16,461,345	15,136,724	12,866,983
Laundry and Sundry Income									137,498	135,607	97,781
Total Revenues									16,598,843	15,272,331	12,964,764
Expenses
Administrative									262,394	218,772	205,460
Depreciation and Amortization									3,685,524	3,768,367	3,742,118
Management Fees									338,355	316,813	274,882
Expenses for construction, architectural services and supervision of capital projects									1,279,434	1,167,733	1,023,732
Renting									107,250	91,041	460,718
Repairs and Maintenance									1,902,110	1,694,941	1,814,342
Taxes and Insurance									2,630,668	2,503,801	2,426,021
Total Expenses									10,205,735	9,761,468	9,947,273
Income Before Other Income (Expense)									6,393,108	5,510,863	3,017,491
Other Income (Loss)
Interest expense									(5,026,076)	(5,081,626)	(5,055,677)
Interest income									11,861		1,222
Total Other Income (Expense)									(5,014,215)	(5,081,626)	(5,054,455)
Net Income (Loss)									1,378,893	429,237	(2,036,964)
Mortgage Notes Payable	$ 124,714,582				$ 124,649,959				124,714,582	124,649,959	124,585,336	$ 82,000,000
Dexter Park | NERA 40%
Other Income (Loss)
Proportionate share of net income (loss)									$ 551,556	$ 171,695	$ (814,786)
NERA 50%
Other Income (Loss)
Ownership interest (as a percent)	50.00%				50.00%				50.00%	50.00%	50.00%
NERA 40%
Other Income (Loss)
Ownership interest (as a percent)	40.00%				40.00%				40.00%	40.00%	40.00%