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Marketable Equity Securities (Details 2) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Investments, Debt and Equity Securities [Abstract]    
Unrealized loss on marketable securities $ (233) $ (326)
Realized gain on marketable equities securities sold 25 0
Net loss on marketable securities $ (208) $ (326)