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Summary of Significant Accounting Policies (Details Narrative) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2021 | Sep. 30, 2021 | Jun. 30, 2021 | Mar. 31, 2021 | Dec. 31, 2020 | Sep. 30, 2020 | Jun. 30, 2020 | Mar. 31, 2020 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Unpaid principal balances of mortgage loans serviced for others | $ 351,000 |  |  |  | $ 578,000 |  |  |  | $ 351,000 | $ 578,000 | $ 729,000
Asset and corresponding liability |  |  |  |  | $ 1,300,000 |  |  |  |  | $ 1,300,000 |
Basic earnings per share | $ 0.55 | $ 0.61 | $ 0.82 | $ 0.73 | $ 0.34 | $ 0.80 | $ 0.46 | $ 0.41 | $ 2.71 | $ 2.01 | $ 2.43
Compensation expense for restricted stock units |  |  |  |  |  |  |  |  | $ 181,000 | $ 27,000 | $ 270,000
Building Improvements | Minimum |  |  |  |  |  |  |  |  |  |  |
Estimated useful lives |  |  |  |  |  |  |  |  | 10 |  |
Building Improvements | Maximum |  |  |  |  |  |  |  |  |  |  |
Estimated useful lives |  |  |  |  |  |  |  |  | 50 |  |
Furniture and equipment | Minimum |  |  |  |  |  |  |  |  |  |  |
Estimated useful lives |  |  |  |  |  |  |  |  | 3 |  |
Furniture and equipment | Maximum |  |  |  |  |  |  |  |  |  |  |
Estimated useful lives |  |  |  |  |  |  |  |  | 10 |  |

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