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Short-term Borrowings (Summary of Various Sources of Short-Term Borrowed Funds) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019
Short-term Debt [Line Items] |  |
Balance at year end | $ 125,617 |
Federal Funds Purchased [Member] |  |
Short-term Debt [Line Items] |  |
Maximum month-end balance |  | $ 37,573
Average daily balance during the year |  | $ 3,739
Weighted average rate during the year |  | 2.97%
FHLB Short-Term Borrowings [Member] |  |
Short-term Debt [Line Items] |  |
Maximum month-end balance |  | $ 54,667
Average daily balance during the year |  | $ 12,819
Weighted average rate during the year |  | 2.80%
FRB PPPLF Borrowings [Member] |  |
Short-term Debt [Line Items] |  |
Balance at year end | $ 125,617 |
Weighted average rate at year end | 0.35% |
Maximum month-end balance | $ 203,937 |
Average daily balance during the year | $ 106,233 |
Weighted average rate during the year | 0.35% |

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