INVESTMENTS IN MARKETABLE SECURITIES (Details 2) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Net Realized And Unrealized Gain (Loss) From Investments In Marketable Security Summarized Below [Line Items]
Net realized gains from sales of marketable securities	$ 62,000	$ 271,000
Net unrealized gains (losses) from marketable securities	199,000	(21,000)
Total net gains from investments in marketable securities	$ 260,656	$ 250,293