RELATED PARTY ARRANGEMENTS - Trustees' Fees (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
RELATED PARTY ARRANGEMENTS
Annual board retainer fees paid			$ 50,000
Additional annual board retainer fees paid			10,000
Trustee's fee expense	$ 40,000	$ 40,000	80,000	$ 78,000
Trustee's fees payable	$ 0		$ 0		$ 0