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Marketable Equity Securities (Details) - USD ($)
6 Months Ended 12 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Dec. 31, 2019
Cost $ 198,514 $ 1,027,847  
Common Stock [Member]      
Cost 327,378   $ 423,025
Gross unrealized gains (losses) 268,935   216,622
Gross realized gains (losses)  
Fair value $ 596,313   $ 639,647