MORTGAGE NOTES PAYABLE (Mortgages Payable) (Details) - USD ($)	3 Months Ended
	Mar. 31, 2023	Dec. 31, 2022
MORTGAGE NOTES PAYABLE
Effective interest rate (as a percent)	4.25%
Financing fees, net	$ 95,000	$ 109,000
Accumulated amortization on financing and leasing fees	85,000	70,000
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
Outstanding amount of mortgage	410,449,284	410,966,199
Mortgages payable
MORTGAGE NOTES PAYABLE
Amount of monthly installments including principal	$ 1,523,000
Weighted average interest rate (as a percent)	3.69%
Effective interest rate (as a percent)	3.78%
Financing fees, net	$ 3,064,000	3,159,000
Accumulated amortization on financing and leasing fees	$ 1,068,000	$ 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%