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INVESTMENTS IN MARKETABLE SECURITIES (Details) - USD ($)
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Net Realized And Unrealized Gain Loss From Investments In Marketable Security Summarized Below [Line Items]    
Net realized loss from sales of securities $ (28,000) $ (8,000)
Unrealized net gain (loss) securities 208,000 (13,000)
Total net gain (loss) from investments in marketable securities $ 180,474 $ (20,761)