INVESTMENT IN EQUITY SECURITIES (IMAGION BIOSYSTEMS) (Details)	3 Months Ended
	Mar. 31, 2020 USD ($)
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES AND RELATED MATTERS (Details)
Balance as of December 31, 2019	$ 1,045,000
Change due to the sale of securities in investment	(84,000)
Change in the fair value of securities	(553,000)
Balance as of March 31, 2020	$ 408,000