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3) Investments: Investments Classified by Contractual Maturity Date (Details) - USD ($) | Jun. 30, 2019 | Dec. 31, 2018
--- | --- | ---
AmortizedCost | $ 222,824,099 |
Held to maturity securities, Estimated fair value | 237,144,147 |
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises |  |
AmortizedCost | 16,979,038 | $ 15,358,746
Held to maturity securities, Estimated fair value | 17,552,803 | 15,277,280
Redeemable Preferred Stock |  |
AmortizedCost | 103,197 | 103,197
Held to maturity securities, Estimated fair value | 115,309 | $ 99,975
Due in 2017 |  |
AmortizedCost | 6,201,791 |
Held to maturity securities, Estimated fair value | 6,240,536 |
Due in 2018 Through 2021 |  |
AmortizedCost | 66,350,604 |
Held to maturity securities, Estimated fair value | 67,872,915 |
Due in 2022 Through 2026 |  |
AmortizedCost | 66,900,191 |
Held to maturity securities, Estimated fair value | 70,594,910 |
Due After 2026 |  |
AmortizedCost | 66,289,278 |
Held to maturity securities, Estimated fair value | $ 74,767,674 |

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