INVESTMENT IN EQUITY SECURITIES (IMAGION BIOSYSTEMS) (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
INVESTMENT IN IMAGION BIOSYSTEMS
Balance as of December 31, 2021			$ 2,901,000
Change due to the sale of securities			(28,000)
Change in the unrealized fair value of securities	$ 104,000	$ (978,000)	(1,809,000)	$ (3,069,000)
Balance as of September 30, 2022			$ 1,064,000