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2) Investments: Investments Classified by Contractual Maturity Date (Details) | Dec. 31, 2018 USD ($)
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Held-to-Maturity Amortized Cost | $ 232,078,723
Held-to-Maturity Estimated Fair Value | 234,750,858
Collateralized Mortgage Backed Securities |
Held-to-Maturity Amortized Cost | 15,358,746
Held-to-Maturity Estimated Fair Value | 15,277,280
Redeemable Preferred Stock |
Held-to-Maturity Amortized Cost | 103,197
Held-to-Maturity Estimated Fair Value | 99,975
Due in 2017 |
Held-to-Maturity Amortized Cost | 17,363,658
Held-to-Maturity Estimated Fair Value | 17,513,419
Due in 2018 Through 2021 |
Held-to-Maturity Amortized Cost | 66,215,222
Held-to-Maturity Estimated Fair Value | 66,479,844
Due in 2022 Through 2026 |
Held-to-Maturity Amortized Cost | 66,450,299
Held-to-Maturity Estimated Fair Value | 65,793,696
Due After 2026 |
Held-to-Maturity Amortized Cost | 66,587,601
Held-to-Maturity Estimated Fair Value | $ 69,586,644

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