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Fair Value Measurements (Narrative) (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Write-downs included in other non-interest expense | $ 492,000 |  |
Goodwill, Impairment Loss | $ 0 | $ 0 |
Minimum |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Collateral discount | 20.00% | 20.00% |
Maximum |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Collateral discount | 30.00% | 30.00% |
Other Assets |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Write-downs included in other non-interest expense | $ 492,000 | $ 170,000 | $ 444,000

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