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2) Investments: Investments Classified by Contractual Maturity Date (Details) - USD ($) | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Available-for-sale Securities, Amortized Cost Basis | $ 338,629,810 |
Available-for-sale Securities | 355,977,820 | $ 0
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises |  |
Available-for-sale Securities, Amortized Cost Basis | 31,475,280 | 15,358,746
Available-for-sale Securities | 31,832,498 | 15,277,280
Redeemable Preferred Stock |  |
Available-for-sale Securities, Amortized Cost Basis | 364,339 | 103,197
Available-for-sale Securities | 364,339 | $ 99,975
Due in 2017 |  |
Available-for-sale Securities, Amortized Cost Basis | 104,805,927 |
Available-for-sale Securities | 104,845,243 |
Due in 2018 Through 2021 |  |
Available-for-sale Securities, Amortized Cost Basis | 67,412,618 |
Available-for-sale Securities | 69,126,500 |
Due in 2022 Through 2026 |  |
Available-for-sale Securities, Amortized Cost Basis | 71,110,341 |
Available-for-sale Securities | 76,249,550 |
Due After 2026 |  |
Available-for-sale Securities, Amortized Cost Basis | 63,461,305 |
Available-for-sale Securities | $ 73,559,690 |

X
- Definition Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any. + References No definition available. + Details
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- Details
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Data Type: | na
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- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_RedeemablePreferredStockMember
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Data Type: | na
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- Details
Name: | fil_ContractualMaturityAxis=fil_DueIn2017Member
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Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | fil_ContractualMaturityAxis=fil_DueIn2018Through2021Member
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X
- Details
Name: | fil_ContractualMaturityAxis=fil_DueIn2022Through2026Member
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Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | fil_ContractualMaturityAxis=fil_DueAfter2026Member
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