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Summary of Significant Accounting Policies (Details) - USD ($) |  |  | 12 Months Ended |  |
--- | --- | --- | --- | --- | ---
Jul. 01, 2021 | Jul. 01, 2020 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Summary Of Significant Accounting Policies |  |  |  |  |
Loans held for sale |  |  | $ 2,249,000 | $ 5,099,000 |
Sustained period of repayment performance for non-accrual TDRs |  |  | 6 months |  |
Period of employees highest compensation before retirement |  |  | 10 years |  |
Tax liabilities related to uncertain tax positions |  |  | $ 0 | 0 | $ 0
Interest or penalties recognized related to uncertain tax positions |  |  | $ 0 | $ 0 | $ 0
Special stock dividend, rate percent (in percent) | 4.00% |  |  |  |
Special stock dividend, record date |  | Jun. 15, 2021 |  |  |
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 |  |  |  |  |
Investment in capital stock of the Federal Home Loan Bank of total assets (in percent) |  |  | 0.12% |  |
Investment in capital stock of Federal Home Loan Bank required percentage of advances (in percent) |  |  | 4.00% |  |

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- Definition Represent period over which debtor demonstrates the ability to pay under the terms of the restructured note through a sustained period of repayment performance, for non-accrual TDRs to be returned to accruing status. + References No definition available. + Details
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