BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Revenue Recognition (Details) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Lease incentives	$ 3,900,000	$ 4,000,000
Lease incentives, accumulated amortization	3,000,000	2,700,000
Allowance for uncollectible accounts receivable	387,000	579,000
Tenant recoveries outside of lease agreements	0	$ 0
Performance obligations	$ 0