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10) Derivative Instruments: Schedule of Derivative Assets at Fair Value (Details) - USD ($) | Mar. 31, 2021 | Dec. 31, 2020
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Loan Commitments |  |
Derivative, Notional Amount | $ 817,802,853 | $ 659,245,038
Derivative Asset, Notional Amount | 10,671,623 | 12,592,672
Derivative Liability, Notional Amount | 228,547 | 2,464,062
Call Options |  |
Derivative, Notional Amount | 2,042,500 | 1,873,200
Derivative Asset, Notional Amount | 0 | 0
Derivative Liability, Notional Amount | 79,567 | 43,097
Net Derivatives Loan Commitments |  |
Derivative, Notional Amount | 819,845,353 | 661,118,238
Derivative Asset, Notional Amount | 10,671,623 | 12,592,672
Derivative Liability, Notional Amount | $ 308,114 | $ 2,507,159

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