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Loans and Related Allowance for Loan Losses (Modification of Troubled Debt Restructuring by Class) (Details) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2017 USD ($) loan | Mar. 31, 2016 USD ($) contract
Temporary Rate Modification [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | 0 | 0
Recorded Investment | $ 0 | $ 0
Temporary Rate Modification [Member] | Commercial real estate- non owner-occupied [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | 0 | 0
Recorded Investment | $ 0 | $ 0
Temporary Rate Modification [Member] | Commercial real estate- all other CRE [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | 0 | 0
Recorded Investment | $ 0 | $ 0
Temporary Rate Modification [Member] | Acquisition and development- 1-4 family residential construction [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | 0 | 0
Recorded Investment | $ 0 | $ 0
Temporary Rate Modification [Member] | Acquisition and development- All other A&D [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | 0 | 0
Recorded Investment | $ 0 | $ 0
Temporary Rate Modification [Member] | Commercial and industrial [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | 0 | 0
Recorded Investment | $ 0 | $ 0
Temporary Rate Modification [Member] | Residential mortgage- term [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | 0 | 0
Recorded Investment | $ 0 | $ 0
Temporary Rate Modification [Member] | Residential mortgage- home equity [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | 0 | 0
Recorded Investment | $ 0 | $ 0
Temporary Rate Modification [Member] | Consumer [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | 0 | 0
Recorded Investment | $ 0 | $ 0
Extended Maturity [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | 2 | 1
Recorded Investment | $ 503 | $ 203
Extended Maturity [Member] | Commercial real estate- non owner-occupied [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | 0 | 0
Recorded Investment | $ 0 | $ 0
Extended Maturity [Member] | Commercial real estate- all other CRE [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | 0 | 1
Recorded Investment | $ 0 | $ 203
Extended Maturity [Member] | Acquisition and development- 1-4 family residential construction [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | 0 | 0
Recorded Investment | $ 0 | $ 0
Extended Maturity [Member] | Acquisition and development- All other A&D [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | 1 | 0
Recorded Investment | $ 244 | $ 0
Extended Maturity [Member] | Commercial and industrial [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | 0 | 0
Recorded Investment | $ 0 | $ 0
Extended Maturity [Member] | Residential mortgage- term [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | 1 | 0
Recorded Investment | $ 259 | $ 0
Extended Maturity [Member] | Residential mortgage- home equity [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | 0 | 0
Recorded Investment | $ 0 | $ 0
Extended Maturity [Member] | Consumer [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | 0 | 0
Recorded Investment | $ 0 | $ 0
Modification Of Payment And Other Terms [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | 0 | 2
Recorded Investment | $ 0 | $ 558
Modification Of Payment And Other Terms [Member] | Commercial real estate- non owner-occupied [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | 0 | 0
Recorded Investment | $ 0 | $ 0
Modification Of Payment And Other Terms [Member] | Commercial real estate- all other CRE [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | 0 | 0
Recorded Investment | $ 0 | $ 0
Modification Of Payment And Other Terms [Member] | Acquisition and development- 1-4 family residential construction [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | 0 | 0
Recorded Investment | $ 0 | $ 0
Modification Of Payment And Other Terms [Member] | Acquisition and development- All other A&D [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | 0 | 0
Recorded Investment | $ 0 | $ 0
Modification Of Payment And Other Terms [Member] | Commercial and industrial [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | 0 | 1
Recorded Investment | $ 0 | $ 486
Modification Of Payment And Other Terms [Member] | Residential mortgage- term [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | 0 | 1
Recorded Investment | $ 0 | $ 72
Modification Of Payment And Other Terms [Member] | Residential mortgage- home equity [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | 0 | 0
Recorded Investment | $ 0 | $ 0
Modification Of Payment And Other Terms [Member] | Consumer [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | 0 | 0
Recorded Investment | $ 0 | $ 0

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