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Loans And Related Allowances For Loan Losses (Narrative) (Details) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2015 USD ($) loan | Sep. 30, 2015 USD ($) loan | Dec. 31, 2015 USD ($) loan | Dec. 31, 2014 USD ($) loan
Financing Receivable, Modifications [Line Items] |  |  |  |
Commercial amount benchmark minimum for internal annual review |  |  | $ 500,000 |
Commercial amount benchmark minimum for annual review by independent reviewer |  |  | 1,000,000 |
Commercial relationship amount benchmark for evaluation |  |  | 750,000 |
Nonaccrual loans subject to partial charge off | $ 15,498,000 |  | $ 15,498,000 | $ 11,551,000
Financing receivable, modifications, number of contracts | loan |  |  | 29 | 27
Reduction of the ALL resulting from new TDRs |  |  | $ 7,541 |
Financing receivable, modifications, recorded investment | 14,000,000 |  | 14,000,000 | $ 13,700,000
Partial Charge Off [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Nonaccrual loans subject to partial charge off | 4,100,000 |  | $ 4,100,000 | $ 4,600,000
New TDR [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Financing receivable, modifications, number of contracts | loan |  |  | 9 |
Pre Existing TDR [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Financing receivable, modifications, number of contracts | loan |  |  | 11 |
Acquisition and Development (A&D) TDR [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Financing receivable, modifications, subsequent default, number of contracts | loan |  |  |  | 3
Commerical Real Estate TDR [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Financing receivable, modifications, subsequent default, recorded investment |  |  |  | $ 400,000
Commerical and Industrial TDR [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Financing receivable, modifications, subsequent default, recorded investment |  |  |  | 200,000
Troubled Debt Restructuring [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Unused commitments to extend credit | 11,200 |  | $ 11,200 | 10,400
Foreclosure 1-4 Family Real Estate Properties [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Loans secured by real estate properties in process of foreclosure | 1,800,000 |  | 1,800,000 | 1,900,000
Commercial real estate- non owner-occupied [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Nonaccrual loans subject to partial charge off | 1,308,000 |  | 1,308,000 | 1,152,000
Commercial real estate- all other CRE [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Nonaccrual loans subject to partial charge off | 9,974,000 |  | 9,974,000 | 4,610,000
Acquisition and development- 1-4 family residential construction [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Nonaccrual loans subject to partial charge off | 0 |  | 0 | 0
Other Acquired and Development Financing Receivable [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Nonaccrual loans subject to partial charge off | 1,817,000 |  | 1,817,000 | 3,609,000
Financing receivable, modifications, subsequent default, recorded investment |  |  |  | 1,600,000
Commercial and industrial [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Nonaccrual loans subject to partial charge off | 185,000 |  | 185,000 | 171,000
Residential mortgage- term [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Nonaccrual loans subject to partial charge off | $ 1,938,000 |  | 1,938,000 | 1,666,000
Financing receivable, modifications, subsequent default, number of contracts | loan | 2 | 1 |  |
Financing receivable, modifications, subsequent default, recorded investment | $ 200,000 | $ 100,000 |  |
Residential mortgage- home equity [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Nonaccrual loans subject to partial charge off | 276,000 |  | 276,000 | 343,000
Consumer [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Nonaccrual loans subject to partial charge off | $ 0 |  | $ 0 | $ 0

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