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Fair Value (Fair Value Assets and Liabilities Measured on Nonrecurring Basis Validation Techniques) (Details) - Impaired Loans - Significant Unobservable Inputs (Level 3) $ in Thousands | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($)
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Commercial and Industrial Loans | Sales comparison approach | Minimum |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Measurement input | 0.00 | 0.00
Commercial and Industrial Loans | Sales comparison approach | Maximum |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Measurement input | 1.00 | 0.95
Commercial and Industrial Loans | Sales comparison approach | Weighted Average |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Measurement input | 0.99 | 0.84
Commercial Real Estate Loans | Sales comparison approach | Minimum |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Measurement input | 0.22 | 0.30
Commercial Real Estate Loans | Sales comparison approach | Maximum |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Measurement input | 0.76 | 0.76
Commercial Real Estate Loans | Sales comparison approach | Weighted Average |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Measurement input | 0.55 | 0.47
Fair Value, Measurements, Nonrecurring | Commercial and Industrial Loans |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Fair Value | $ 2,210 | $ 3,354
Fair Value, Measurements, Nonrecurring | Commercial Real Estate Loans |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Fair Value | $ 2,528 | $ 3,438

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- Definition Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258 + Details
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