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10) Derivative Instruments: Schedule of Gains and Losses on Derivatives (Details) - USD ($) | 3 Months Ended | 9 Months Ended
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Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019
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Gain (Loss) on Derivatives, Loan Commitments | $ 3,901,086 | $ 378,899 | $ 12,454,218 | $ 1,915,223
Gain (Loss) on Derivatives, Call and put options | $ 34,171 | $ 104,702 | $ 124,516 | $ 509,639

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