MORTGAGE NOTES PAYABLE (Mortgages Payable) (Details) - USD ($)	9 Months Ended
	Sep. 30, 2023	Dec. 31, 2022
MORTGAGE NOTES PAYABLE
Effective interest rate (as a percent)	4.29%
Financing fees, net	$ 67,000	$ 109,000
Accumulated amortization on financing and leasing fees	115,000	70,000
Annual maturities of mortgage debt
2024-current maturities	3,295,000
2025	3,639,000
2026	25,267,000
2027	3,268,000
2028	22,846,000
Thereafter	353,812,000
Total	412,127,000
Less: unamortized deferred financing costs	2,874,000
Outstanding amount of mortgage	409,253,129	410,966,199
Mortgages payable
MORTGAGE NOTES PAYABLE
Amount of monthly installments including principal	$ 1,523,000
Weighted average interest rate (as a percent)	3.68%
Effective interest rate (as a percent)	3.78%
Financing fees, net	$ 2,874,000	3,159,000
Accumulated amortization on financing and leasing fees	$ 1,258,000	$ 973,000
Mortgages payable | Minimum
MORTGAGE NOTES PAYABLE
Interest rate (as a percent)	2.97%
Mortgages payable | Maximum
MORTGAGE NOTES PAYABLE
Interest rate (as a percent)	4.95%