INVESTMENT IN UNCONSOLIDATED JOINT VENTURES (Mortgage Maturities) (Details) - USD ($)	Sep. 30, 2026	Dec. 31, 2025	Sep. 30, 2025	May 31, 2018	Sep. 12, 2016
Annual maturities of mortgage debt
2027	$ 3,227,000
2027	69,808,000
2028	49,316,000
2029	839,000
2030	870,000
Thereafter	401,142,000
Total	525,202,000
Less: unamortized deferred financing costs	(3,016,000)
Mortgage Notes Payable	$ 522,186,323	$ 527,596,823
Weighted average interest rate (as a percent)	4.30%
Effective interest rate (as a percent)	4.40%
Investment Properties
Annual maturities of mortgage debt
2027	$ 266,775
2027	132,533,359
Thereafter	41,803,000
Total	174,603,134
Less: unamortized deferred financing costs	(505,243)
Mortgage Notes Payable	174,097,891		$ 174,233,798
Hamilton Essex 81
Annual maturities of mortgage debt
Thereafter	12,214,000
Total	12,214,000
Less: unamortized deferred financing costs	(152,970)
Mortgage Notes Payable	12,061,030		12,044,033
345 Franklin
Annual maturities of mortgage debt
2027	266,775
2027	7,533,359
Total	7,800,134
Less: unamortized deferred financing costs	(11,652)
Mortgage Notes Payable	7,788,482		8,038,487
Hamilton Minuteman Apts
Annual maturities of mortgage debt
Thereafter	6,000,000
Total	6,000,000
Less: unamortized deferred financing costs	(40,577)				$ (123,000)
Mortgage Notes Payable	5,959,423		5,951,240
Hamilton on Main Apts
Annual maturities of mortgage debt
Thereafter	23,589,000
Total	23,589,000
Less: unamortized deferred financing costs	(192,339)
Mortgage Notes Payable	23,396,661		23,372,366
Dexter Park
Annual maturities of mortgage debt
2027	125,000,000
Total	125,000,000
Less: unamortized deferred financing costs	(107,705)
Mortgage Notes Payable	$ 124,892,295		$ 124,827,672	$ 82,000,000