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INVESTMENT IN UNCONSOLIDATED JOINT VENTURES (Mortgage Maturities) (Details) - USD ($)	Mar. 31, 2023	Dec. 31, 2022	Mar. 31, 2022	May 31, 2018	Oct. 13, 2016
Annual maturities of mortgage debt
2024-current maturities	$ 2,753,000
2025	3,014,000
2026	22,063,000
2027	6,625,000
2028	23,163,000
Thereafter	355,895,000
Total	413,513,000
Less: unamortized deferred financing costs	(3,064,000)
Secured Debt	$ 410,449,284	$ 410,966,199
Weighted average interest rate (as a percent)	4.18%
Effective interest rate (as a percent)	4.25%
Investment Properties
Annual maturities of mortgage debt
2024-current maturities	$ 233,032
2025	17,142,212
2026	10,251,753
2027	261,671
2028	271,979
Thereafter	138,396,055
Total	166,556,702
Less: unamortized deferred financing costs	(495,273)
Secured Debt	166,061,429		$ 166,176,323
Hamilton Essex 81
Annual maturities of mortgage debt
2026	10,000,000
Total	10,000,000
Less: unamortized deferred financing costs	(34,473)
Secured Debt	9,965,527		9,951,738
345 Franklin
Annual maturities of mortgage debt
2024-current maturities	233,032
2025	242,212
2026	251,753
2027	261,671
2028	271,979
Thereafter	7,396,055
Total	8,656,702
Less: unamortized deferred financing costs	(34,957)
Secured Debt	8,621,745		8,839,286
Hamilton Minuteman
Annual maturities of mortgage debt
Thereafter	6,000,000
Total	6,000,000
Less: unamortized deferred financing costs	(69,219)				$ (123,000)
Secured Debt	5,930,781		5,922,598
Hamilton on Main Apts
Annual maturities of mortgage debt
2025	16,900,000
Total	16,900,000
Less: unamortized deferred financing costs	(22,739)
Secured Debt	16,877,261		16,861,209
Dexter Park
Annual maturities of mortgage debt
Thereafter	125,000,000
Total	125,000,000
Less: unamortized deferred financing costs	(333,885)
Secured Debt	$ 124,666,115		$ 124,601,492	$ 82,000,000