BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Revenue Recognition (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Accounting Policies [Abstract]
Lease incentives	$ 3,900,000		$ 3,900,000		$ 3,900,000
Lease incentives, accumulated amortization	3,200,000		3,200,000		3,000,000
Allowance for uncollectible accounts receivable	703,000		703,000		$ 387,000
Tenant recoveries outside of lease agreements	0	$ 0	0	$ 0
Remaining performance obligations	$ 0		$ 0