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Securities - Additional Information (Details) - USD ($)
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Amortized Cost and Fair Value Debt Securities    
Total fair value $ 5,814,388 $ 512,303
Percentage of total investment portfolio fair value 86.00% 81.00%
Proceeds from the sale of available-for-sale securities $ 0 $ 4,999,893
Realized Investment Gains (Losses) $ 0