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Summary of Significant Accounting and Reporting Policies (Schedule of Unrealized Losses on Investments) (Details) - USD ($)
Dec. 31, 2019
Dec. 31, 2018
Accounting Policies [Abstract]    
Aggregate Unrealized Losses, Less than one year $ 587,564 $ 365,824
Aggregate Fair Value, Less than one year 90,721,081 68,722,980
Aggregate Unrealized Losses, Greater than one year 0 433
Aggregate Fair Value, Greater than one year 0 3,000,000
Aggregate Unrealized Losses, Total 587,564 366,257
Aggregate Fair Value, Total $ 90,721,081 $ 71,722,980