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2) Investments: Investments Classified by Contractual Maturity Date (Tables) | 12 Months Ended
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Dec. 31, 2019
Held-to-maturity Securities |
Investments Classified by Contractual Maturity Date |
|  | Amortized |  | Estimated Fair
|  | Cost |  | Value
Due in 1 year |  | $ 104,805,927 |  | $ 104,845,243
Due in 2-5 years |  | 67,412,618 |  | 69,126,500
Due in 5-10 years |  | 71,110,341 |  | 76,249,550
Due in more than 10 years |  | 63,461,305 |  | 73,559,690
Mortgage-backed securities |  | 31,475,280 |  | 31,832,498
Redeemable preferred stock |  | 364,339 |  | 364,339
Total held to maturity |  | $ 338,629,810 |  | $ 355,977,820

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