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Derivatives and Hedging Derivatives and Hedging (Schedule of customer loan swaps) (Details) - Interest Rate Swap [Member] $ in Thousands | Dec. 31, 2019 USD ($) derivative | Dec. 31, 2018 USD ($) derivative
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Derivative [Line Items] |  |
Derivative, Notional Amount | $ 43,000 | $ 43,000
Derivative, Fair Value, Net | $ (8,187) | $ (5,682)
federal home loan bank 30-day [Member] |  |
Derivative [Line Items] |  |
Derivative, Number of Instruments Held | derivative | 75 | 25
Derivative, Notional Amount | $ 366,351 | $ 118,891
Derivative, Fair Value, Net | $ 17,756 | $ 3,467
Other Liabilities [Member] | federal home loan bank 30-day [Member] |  |
Derivative [Line Items] |  |
Derivative, Number of Instruments Held | derivative | 10 | 57
Derivative, Notional Amount | $ 45,243 | $ 297,624
Derivative, Fair Value, Net | $ (514) | $ (7,841)
Commercial and Industrial Sector [Member] |  |
Derivative [Line Items] |  |
Derivative, Number of Instruments Held | derivative | 85 | 82
Derivative, Notional Amount | $ 411,594 | $ 416,515
Derivative, Fair Value, Net | $ (17,242) | $ 4,374
Loans [Member] |  |
Derivative [Line Items] |  |
Derivative, Number of Instruments Held | derivative | 170 | 164
Derivative, Notional Amount | $ 823,188 | $ 833,030
Derivative, Fair Value, Net | $ 0 | $ 0

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