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Derivatives and Hedging Derivatives and Hedging (Schedule of customer loan swaps) (Details) - Interest Rate Swap [Member] $ in Thousands | Dec. 31, 2020 USD ($) derivative | Dec. 31, 2019 USD ($) derivative
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Derivative [Line Items] |  |
Derivative, Fair Value, Net | $ (10,350) | $ (8,187)
Derivative, Notional Amount | $ 53,000 | $ 43,000
federal home loan bank 30-day [Member] |  |
Derivative [Line Items] |  |
Derivative, Number of Instruments Held | derivative | 80 | 75
Derivative, Fair Value, Net | $ 39,627 | $ 17,756
Derivative, Notional Amount | $ 376,290 | $ 366,351
Other Liabilities [Member] | federal home loan bank 30-day [Member] |  |
Derivative [Line Items] |  |
Derivative, Number of Instruments Held | derivative | 0 | 10
Derivative, Fair Value, Net | $ 0 | $ (514)
Derivative, Notional Amount | $ 0 | $ 45,243
Commercial and Industrial Sector [Member] |  |
Derivative [Line Items] |  |
Derivative, Number of Instruments Held | derivative | 80 | 85
Derivative, Fair Value, Net | $ (39,627) | $ (17,242)
Derivative, Notional Amount | $ 376,290 | $ 411,594
Loans [Member] |  |
Derivative [Line Items] |  |
Derivative, Number of Instruments Held | derivative | 160 | 170
Derivative, Fair Value, Net | $ 0 | $ 0
Derivative, Notional Amount | $ 752,580 | $ 823,188

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