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Loan and Lease Receivables, Impaired Loans and Leases and Allowance for Loan and Lease Losses (Troubled Debt Restructurings) (Details) $ in Thousands | 12 Months Ended
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Dec. 31, 2018 loans | Dec. 31, 2017 USD ($) loans
Troubled debt restructurings: |  |
Number of loans | loans | 0 | 5
Pre-Modification Recorded Investment |  | $ 4,391
Post-Modification Recorded Investment |  | $ 4,361
Commercial and industrial |  |
Troubled debt restructurings: |  |
Number of loans | loans |  | 4
Pre-Modification Recorded Investment |  | $ 4,374
Post-Modification Recorded Investment |  | $ 4,344
Other |  |
Troubled debt restructurings: |  |
Number of loans | loans |  | 1
Pre-Modification Recorded Investment |  | $ 17
Post-Modification Recorded Investment |  | $ 17

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