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Summary of Significant Accounting and Reporting Policies (Schedule of Unrealized Losses on Investments) (Details) - USD ($)
Dec. 31, 2020
Dec. 31, 2019
Accounting Policies [Abstract]    
Aggregate Unrealized Losses, Less than one year $ 561,300 $ 587,564
Aggregate Fair Value, Less than one year 12,317,187 90,721,081
Aggregate Unrealized Losses, Greater than one year 0 0
Aggregate Fair Value, Greater than one year 0 0
Aggregate Unrealized Losses, Total 561,300 587,564
Aggregate Fair Value, Total $ 12,317,187 $ 90,721,081