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Troubled Debt Restructurings (Schedule of Troubled Debt Restructurings on Financing Receivables) (Details) $ in Thousands | 12 Months Ended
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Dec. 31, 2015 USD ($) contract | Dec. 31, 2014 USD ($) contract | Dec. 31, 2013 USD ($) contract
Troubled Debt Restructuring, Subsequent Periods [Line Items] |  |  |
Number of Contracts | contract | 3 | 5 | 5
Pre-Modification Outstanding Recorded Investment | $ 794 | $ 2,746 | $ 2,130
Post-Modification Outstanding Recorded Investment | $ 794 | $ 1,974 | $ 2,130
Commercial - Non Real Estate Commercial And Industrial [Member] |  |  |
Troubled Debt Restructuring, Subsequent Periods [Line Items] |  |  |
Number of Contracts | contract |  | 2 |
Pre-Modification Outstanding Recorded Investment |  | $ 941 |
Post-Modification Outstanding Recorded Investment |  | $ 639 |
Construction And Farmland Commercial [Member] |  |  |
Troubled Debt Restructuring, Subsequent Periods [Line Items] |  |  |
Number of Contracts | contract |  | 1 | 2
Pre-Modification Outstanding Recorded Investment |  | $ 1,520 | $ 1,608
Post-Modification Outstanding Recorded Investment |  | $ 1,050 | $ 1,608
Residential Equity Lines [Member] |  |  |
Troubled Debt Restructuring, Subsequent Periods [Line Items] |  |  |
Number of Contracts | contract |  | 1 | 1
Pre-Modification Outstanding Recorded Investment |  | $ 69 | $ 184
Post-Modification Outstanding Recorded Investment |  | $ 69 | $ 184
Residential Single Family Financing Receivable [Member] |  |  |
Troubled Debt Restructuring, Subsequent Periods [Line Items] |  |  |
Number of Contracts | contract | 3 | 1 | 2
Pre-Modification Outstanding Recorded Investment | $ 794 | $ 216 | $ 338
Post-Modification Outstanding Recorded Investment | $ 794 | $ 216 | $ 338

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