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Summary of Significant Accounting Policies (Details) | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2024 USD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($)
Summary Of Significant Accounting Policies |  |  |  |
Loans held for sale | $ 0 | $ 3,884,000 |  |
Credit losses on unfunded commitments | $ 22,044,000 | 23,744,000 | $ 15,588,000 | $ 16,903,000
Period of employees highest compensation before retirement | 10 years |  |  |
Tax liabilities related to uncertain tax positions | $ 0 | 0 | $ 0 |
Unfunded Loan Commitment |  |  |  |
Summary Of Significant Accounting Policies |  |  |  |
Credit losses on unfunded commitments | $ 900,000 | $ 900,000 |  |
Buildings and improvements | Minimum |  |  |  |
Summary Of Significant Accounting Policies |  |  |  |
Estimated useful lives | 5 years |  |  |
Buildings and improvements | Maximum |  |  |  |
Summary Of Significant Accounting Policies |  |  |  |
Estimated useful lives | 40 years |  |  |
Furniture and Fixtures | Minimum |  |  |  |
Summary Of Significant Accounting Policies |  |  |  |
Estimated useful lives | 3 years |  |  |
Furniture and Fixtures | Maximum |  |  |  |
Summary Of Significant Accounting Policies |  |  |  |
Estimated useful lives | 15 years |  |  |
Federal Home Loan Bank of Des Moines |  |  |  |
Summary Of Significant Accounting Policies |  |  |  |
Basis points | 0.0006 |  |  |
Investment in capital stock of Federal Home Loan Bank required percentage of advances (in percent) | 4.50% |  |  |

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