MORTGAGE NOTES PAYABLE (Mortgages Payable) (Details) - USD ($)	3 Months Ended
	Mar. 31, 2024	Dec. 31, 2023
MORTGAGE NOTES PAYABLE
Effective interest rate (as a percent)	4.29%
Financing fees, net	$ 36,000	$ 52,000
Annual maturities of mortgage debt
2025-current maturities	3,013,000
2026	22,043,000
2027	6,625,000
2028	23,180,000
2029	58,851,000
Thereafter	297,032,000
Total	410,744,000
Less: unamortized deferred financing costs	2,684,000
Outstanding amount of mortgage	408,060,293	408,660,292
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)	3.77%
Financing fees, net	$ 2,684,000	2,779,000
Accumulated amortization on financing and leasing fees	$ 1,448,000	$ 1,353,000
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%