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8) Fair Value of Financial Instruments: Schedule of Effect of Significant Unobservable Inputs, Changes in Plan Assets (Details) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2021 | Dec. 31, 2020
Loans Held For Sale |  |
Fair Value Balance | $ 304,030,372 | $ 422,772,418
Fair Value Measurement With Unobservable Inputs Reconciliation, Recurring Basis, Asset And Liability, Range of Inputs minimum | 95.00% | 99.00%
Fair Value Measurement With Unobservable Inputs Reconciliation, Recurring Basis, Asset And Liability, Range of Inputs maximum | 109.00% | 110.00%
Fair Value Measurement With Unobservable Inputs Reconciliation, Recurring Basis, Asset And Liability, Weighted Average | 103.00% | 104.00%
Net Derivatives Loan Commitments |  |
Fair Value Balance | $ 10,443,076 | $ 10,128,610
Fair Value Measurement With Unobservable Inputs Reconciliation, Recurring Basis, Asset And Liability, Range of Inputs minimum | 61.00% | 52.00%
Fair Value Measurement With Unobservable Inputs Reconciliation, Recurring Basis, Asset And Liability, Range of Inputs maximum | 92.00% | 92.00%
Fair Value Measurement With Unobservable Inputs Reconciliation, Recurring Basis, Asset And Liability, Weighted Average | 82.00% | 81.00%
Fixed maturity securities available for sale |  |
Fair Value Balance | $ 2,191,093 | $ 2,201,175

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