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INVESTMENTS (Details) - USD ($)
$ in Thousands
 9 Months Ended 12 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Dec. 31, 2019
Investments rollforward      
Opening balance $ 1,885 $ 3,131 $ 3,131
Additions/transfers during the period   2,314  
Net (loss) on securities sold   3,375  
Disposals/transfers during period   (7,193)  
Unrealized (loss) on securities held   1,597  
Fair Value end of the period   3,224 1,885
Proceeds from sale of investments 1,266 4,204  
Cost of purchase of marketable equity securities     1,300
Marketable equity securities      
Investments rollforward      
Opening balance 1,885 2,718 2,718
Additions/transfers during the period   2,314  
Net (loss) on securities sold (619) 3,375  
Disposals/transfers during period (1,266) (5,653)  
Unrealized (loss) on securities held   470  
Fair Value end of the period   3,224 1,885
Proceeds from sale of investments $ 1,300 5,700  
Warrants      
Investments rollforward      
Opening balance   413 $ 413
Disposals/transfers during period   (1,540)  
Unrealized (loss) on securities held   $ 1,127