INVESTMENTS IN MARKETABLE SECURITIES (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Net Realized And Unrealized Gain Loss From Investments In Marketable Security Summarized Below [Line Items]
Net realized gain (loss) from sales of securities	$ 4,000	$ (71,000)	$ (4,000)	$ (89,000)
Unrealized net gain in trading securities	41,000	175,000	28,000	320,000
Total net gain from investments in marketable securities	$ 45,223	$ 104,141	$ 24,462	$ 230,653