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Investments, Trading Securities (Details) - USD ($)
3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Dec. 31, 2017
Trading Securities [Abstract]      
The fair value of derivatives included in trading security assets $ 0   $ 2,500
The fair value of derivatives included in trading security liabilities 0   $ (1,439)
Increase (Decrease) in Trading Securities [Abstract]      
Net unrealized gains (losses) 0 $ (111,531)  
Net realized gains (losses) $ 0 $ 110,470