Borrowed Funds (Summary of Short Term Borrowings) (Details) - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 31, 2019 |
Dec. 31, 2018 |
|
| Short-term FHLB Advance [Member] | ||
| Short-term Debt [Line Items] | ||
| Overnight borrowings, interest rate | 2.70% | |
| Overnight borrowings | $ 40,000 | |
| Securities Sold under Agreements to Repurchase [Member] | ||
| Short-term Debt [Line Items] | ||
| Outstanding at end of year | $ 48,728 | $ 37,707 |
| Weighted average interest rate at year end | 0.23% | 0.24% |
| Maximum amount outstanding as of any month end | $ 50,345 | $ 55,648 |
| Average amount outstanding | $ 39,778 | $ 44,045 |
| Approximate weighted average rate during the period | 0.28% | 0.20% |