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Income Tax, Components of Deferred Tax Asset and Liability (Details) - USD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | --- | ---
Deferred Tax Assets, Gross [Abstract] |  |  |
Deferred Tax Asset, Allowance For Loan Loss | $ 1,102 | $ 1,203 |
Deferred Tax Assets, Unrealized Losses on Available-for-Sale Securities, Gross | 0 | 1,262 |
Deferred Tax Asset, Bonus | 296 | 8 |
Deferred Tax Asset Right Of Use Liability | 198 | 0 |
Deferred Tax Assets, Other | 88 | 127 |
Deferred Tax Assets, Gross | 1,684 | 2,600 |
Deferred Tax Liabilities [Abstract] |  |  |
Deferred Tax Liabilities, Property, Plant and Equipment | 315 | 280 |
Deferred Tax Liabilities, Unrealized Gains on Available-for-Sale Securities, Gross | 690 | 0 |
Deferred Tax Liabilities, Originated Mortgage Servicing Rights | 326 | 362 |
Deferred Tax Liabilities, Right Of Use Asset | 197 | 0 |
Deferred Tax Liabilities, Other | 165 | 168 |
Deferred Income Tax Liabilities, Gross, Total | 1,693 | 810 |
Deferred Tax Assets (Liabilities), Net | $ (9) | $ 1,790 | $ 789

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