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5) Value of Business Acquired, Instangible Assets and Goodwill: Net amortization charged to income (Details) - USD ($) | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Details |  |  |  |  |  |  |
Value of business acquired - net amortization charged to income | $ 845,000 | $ 916,000 | $ 985,000 | $ 1,065,000 | $ 1,194,000 | $ 851,374 | $ 823,569

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