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Borrowings (Narrative) (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | --- | ---
Short-term Debt [Line Items] |  |  |
Long-term Federal Home Loan Bank Advances |  | $ 15,000 |
Federal Home Loan Bank Advances [Member] |  |  |
Short-term Debt [Line Items] |  |  |
Long-term Federal Home Loan Bank Advances | $ 15,000 |  |
Debt Instrument, Interest Rate, Effective Percentage | 2.82% |  |
Line of Credit [Member] | Federal Funds Line Of Credit And Reverse Repurchase Agreement [Member] |  |  |
Short-term Debt [Line Items] |  |  |
Short-term Debt, Total |  | 15,000 | $ 15,000
Federal Home Loan Bank Advances [Member] |  |  |
Short-term Debt [Line Items] |  |  |
Short-term Debt, Total | $ 0 | 0 |
Federal Home Loan Bank Advances [Member] | Secured Credit [Member] |  |  |
Short-term Debt [Line Items] |  |  |
Line of Credit Facility, Remaining Borrowing Capacity | $ 316,700 | $ 270,100 |

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