INVESTMENT IN UNCONSOLIDATED JOINT VENTURES (Balance Sheet) (Details)	Jun. 30, 2022 USD ($) property	Dec. 31, 2021 USD ($)	Jun. 30, 2021 USD ($) property	Dec. 31, 2020 USD ($)	May 31, 2018 USD ($)	Oct. 28, 2009 item	Mar. 07, 2005 item	Mar. 02, 2005 item	Sep. 30, 2004 item	Aug. 31, 2004 item	Nov. 30, 2001 item
ASSETS
Rental Properties	$ 245,429,217	$ 251,355,202
Cash and Cash Equivalents	132,631,027	96,083,508
Rents Receivable	653,060	935,303
Real Estate Tax Escrows	1,846,108	861,697
Prepaid Expenses and Other Assets	7,836,007	6,183,981
Total Assets	389,859,084	356,875,579
LIABILITIES AND PARTNERS' CAPITAL
Mortgage Notes Payable	411,900,371	370,481,390
Accounts Payable and Accrued Expenses	4,040,223	4,324,879
Advance Rental Payments and Security Deposits	9,193,906	8,369,497
Total Liabilities	449,231,846	406,168,186
Partners' Capital	(59,372,762)	(49,292,607)	$ (43,531,055)	$ (41,469,045)
Total Liabilities and Partners' Capital	389,859,084	356,875,579
Investment in Unconsolidated Joint Ventures	1,463,665	1,455,888
Distribution and Loss in Excess of investments in Unconsolidated Joint Venture	(24,097,346)	$ (22,992,420)
Investment Properties
ASSETS
Rental Properties	109,473,753		113,368,920
Cash and Cash Equivalents	4,005,493		4,876,022
Rents Receivable	475,307		694,582
Real Estate Tax Escrows	207,892		263,227
Prepaid Expenses and Other Assets	3,491,947		2,071,361
Total Assets	117,654,392		121,274,112
LIABILITIES AND PARTNERS' CAPITAL
Mortgage Notes Payable	166,148,408		166,256,898
Accounts Payable and Accrued Expenses	1,098,219		1,302,656
Advance Rental Payments and Security Deposits	5,063,187		4,253,498
Total Liabilities	172,309,814		171,813,052
Partners' Capital	(54,655,422)		(50,538,940)
Total Liabilities and Partners' Capital	117,654,392		121,274,112
Distribution and Loss in Excess of investments in Unconsolidated Joint Venture			(22,328,026)
Total Investment in Unconsolidated Joint Ventures (Net)	$ (22,633,681)		$ (20,911,068)
Total units/ condominiums
Total | property	690		865
Units to be retained | property	690		690
Total number of units sold | property	175		175
Investment Properties | Residential buildings
Total units/ condominiums
Total | property	687		862
Investment Properties | Commercial
Total units/ condominiums
Total | property	3		3
Hamilton Essex 81
ASSETS
Rental Properties	$ 6,045,672		$ 6,476,479
Cash and Cash Equivalents	709,651		22,648
Rents Receivable	208,605		81,081
Real Estate Tax Escrows	73,643		77,015
Prepaid Expenses and Other Assets	319,717		296,522
Total Assets	7,357,288		6,953,745
LIABILITIES AND PARTNERS' CAPITAL
Mortgage Notes Payable	9,955,186		9,941,396
Accounts Payable and Accrued Expenses	105,777		95,536
Advance Rental Payments and Security Deposits	282,378		161,990
Total Liabilities	10,343,341		10,198,922
Partners' Capital	(2,986,053)		(3,245,177)
Total Liabilities and Partners' Capital	$ 7,357,288		6,953,745
Distribution and Loss in Excess of investments in Unconsolidated Joint Venture			$ (1,622,589)
Total units/ condominiums
Total	49		49				48
Units to be retained | property	49		49
Hamilton Essex 81 | Residential buildings
Total units/ condominiums
Total | property	48		48
Hamilton Essex 81 | Commercial
Total units/ condominiums
Total | property	1		1
Hamilton Essex Development
ASSETS
Rental Properties	$ 2,586,925		$ 2,589,414
Cash and Cash Equivalents	113,595		20,622
Rents Receivable	75,159		57,240
Prepaid Expenses and Other Assets	56,859		72,420
Total Assets	2,832,538		2,739,696
LIABILITIES AND PARTNERS' CAPITAL
Accounts Payable and Accrued Expenses	1,713		1,500
Total Liabilities	1,713		1,500
Partners' Capital	2,830,825		2,738,196
Total Liabilities and Partners' Capital	$ 2,832,538		$ 2,739,696
Total units/ condominiums
Total | property	1		1
Units to be retained | property	1		1
Hamilton Essex Development | Commercial
Total units/ condominiums
Total | property	1		1
345 Franklin
ASSETS
Rental Properties	$ 4,897,693		$ 5,224,951
Cash and Cash Equivalents	217,415		203,017
Rents Receivable	3,531		31,630
Real Estate Tax Escrows	34,630		23,088
Prepaid Expenses and Other Assets	118,903		99,238
Total Assets	5,272,172		5,581,924
LIABILITIES AND PARTNERS' CAPITAL
Mortgage Notes Payable	8,785,710		8,996,847
Accounts Payable and Accrued Expenses	64,101		103,668
Advance Rental Payments and Security Deposits	303,449		234,348
Total Liabilities	9,153,260		9,334,863
Partners' Capital	(3,881,088)		(3,752,939)
Total Liabilities and Partners' Capital	$ 5,272,172		5,581,924
Distribution and Loss in Excess of investments in Unconsolidated Joint Venture			$ (1,876,470)
Total units/ condominiums
Total	40		40								40
Units to be retained | property	40		40
345 Franklin | Residential buildings
Total units/ condominiums
Total | property	40		40
Hamilton 1025
ASSETS
Rental Properties	$ 79,923		$ 83,187
Cash and Cash Equivalents	13,122		9,049
Rents Receivable	4,898		4,627
Prepaid Expenses and Other Assets	630		342
Total Assets	98,573		97,205
LIABILITIES AND PARTNERS' CAPITAL
Accounts Payable and Accrued Expenses	2,064		1,485
Total Liabilities	2,064		1,485
Partners' Capital	96,509		95,720
Total Liabilities and Partners' Capital	$ 98,573		$ 97,205
Total units/ condominiums
Total	176		176					176
Units to be retained	1		1					(49)
Total number of units sold | property	175		175
Hamilton 1025 | Residential buildings
Total units/ condominiums
Total | property	175		175
Hamilton 1025 | Commercial
Total units/ condominiums
Total | property	1		1
Hamilton Minuteman
ASSETS
Rental Properties	$ 4,581,892		$ 4,847,230
Cash and Cash Equivalents	252,822		132,985
Rents Receivable	16,493		5,580
Real Estate Tax Escrows	29,447		41,918
Prepaid Expenses and Other Assets	26,635		19,670
Total Assets	4,907,289		5,047,383
LIABILITIES AND PARTNERS' CAPITAL
Mortgage Notes Payable	5,924,643		5,916,460
Accounts Payable and Accrued Expenses	53,140		49,723
Advance Rental Payments and Security Deposits	195,781		140,039
Total Liabilities	6,173,564		6,106,222
Partners' Capital	(1,266,275)		(1,058,839)
Total Liabilities and Partners' Capital	$ 4,907,289		5,047,383
Distribution and Loss in Excess of investments in Unconsolidated Joint Venture			$ (529,420)
Total units/ condominiums
Total	42		42						42
Units to be retained | property	42		42
Hamilton Minuteman | Residential buildings
Total units/ condominiums
Total | property	42		42
Hamilton on Main Apts
ASSETS
Rental Properties	$ 13,896,435		$ 14,739,183
Cash and Cash Equivalents	808,436		640,754
Rents Receivable	29,724		63,123
Real Estate Tax Escrows	70,172		121,206
Prepaid Expenses and Other Assets	176,283		186,140
Total Assets	14,981,050		15,750,406
LIABILITIES AND PARTNERS' CAPITAL
Mortgage Notes Payable	16,865,222		16,849,171
Accounts Payable and Accrued Expenses	168,858		207,351
Advance Rental Payments and Security Deposits	455,979		425,766
Total Liabilities	17,490,059		17,482,288
Partners' Capital	(2,509,009)		(1,731,882)
Total Liabilities and Partners' Capital	$ 14,981,050		15,750,406
Distribution and Loss in Excess of investments in Unconsolidated Joint Venture			$ (865,941)
Total units/ condominiums
Total	148		148							280
Units to be retained | property	148		148
Hamilton on Main Apts | Residential buildings
Total units/ condominiums
Total | property	148		148
Dexter Park
ASSETS
Rental Properties	$ 77,385,213		$ 79,408,476
Cash and Cash Equivalents	1,890,452		3,846,947
Rents Receivable	136,897		451,301
Prepaid Expenses and Other Assets	2,792,920		1,397,029
Total Assets	82,205,482		85,103,753
LIABILITIES AND PARTNERS' CAPITAL
Mortgage Notes Payable	124,617,647		124,553,024		$ 82,000,000
Accounts Payable and Accrued Expenses	702,566		843,393
Advance Rental Payments and Security Deposits	3,825,600		3,291,355
Total Liabilities	129,145,813		128,687,772
Partners' Capital	(46,940,331)		(43,584,019)
Total Liabilities and Partners' Capital	$ 82,205,482		85,103,753
Distribution and Loss in Excess of investments in Unconsolidated Joint Venture			$ (17,433,608)
Total units/ condominiums
Total	409		409			409
Units to be retained | property	409		409
Dexter Park | Residential buildings
Total units/ condominiums
Total | property	409		409