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Loans And Allowance For Loan Losses (Narrative) (Details) $ in Thousands | 6 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Jun. 30, 2016 USD ($) loan | Jun. 30, 2015 USD ($) loan | Dec. 31, 2015 USD ($) loan | Dec. 31, 2014 USD ($)
Loans And Allowance For Loan Losses [Line Items] |  |  |  |
Period of delinquency after which a loan is placed on non-accruals status | 90 days |  |  |
Loans charge off period | 120 days |  |  |
Loan returned to accrual status, performance required, months | 6 months |  |  |
Number of TDRs classified as non-accrual | loan | 6 |  | 6 |
Number of defaulted loans that had been modified as TDRs | loan | 1 | 0 |  |
Modified troubled debt restructurings resulting in default | $ 40 |  |  |
Number of relationships to loans classified as troubled debt restructurings | loan | 21 |  | 17 |
Loans | $ 529,330 |  | $ 506,842 |
Loans to relationships classified as TDRs, Total | 3,387 |  | 3,162 |
Accruing loans contractually past due 30 days or more, total amount | 0 |  | 0 |
Default amounts on loans that had been modified as TDRs | 879 |  | 826 |
Total other real estate owned | $ 209 | $ 393 | $ 256 | $ 523
Minimum [Member] | Commercial Real Estate Mortgages [Member] |  |  |  |
Loans And Allowance For Loan Losses [Line Items] |  |  |  |
Number of years for which principally collateralized loans are amortized | 15 years |  |  |
Minimum [Member] | Residential Real Estate Mortgages [Member] |  |  |  |
Loans And Allowance For Loan Losses [Line Items] |  |  |  |
Number of years for which principally collateralized loans are amortized | 10 years |  |  |
Maximum [Member] |  |  |  |
Loans And Allowance For Loan Losses [Line Items] |  |  |  |
Percentage of appraised value of residential real estate loans | 80.00% |  |  |
Maximum [Member] | Commercial Real Estate Mortgages [Member] |  |  |  |
Loans And Allowance For Loan Losses [Line Items] |  |  |  |
Number of years for which principally collateralized loans are amortized | 20 years |  |  |
Maximum [Member] | Residential Real Estate Mortgages [Member] |  |  |  |
Loans And Allowance For Loan Losses [Line Items] |  |  |  |
Number of years for which principally collateralized loans are amortized | 30 years |  |  |
Home Equity Loans [Member] | Maximum [Member] |  |  |  |
Loans And Allowance For Loan Losses [Line Items] |  |  |  |
Combined loan-to-value ratio | 85.00% |  |  |
Commercial Real Estate [Member] |  |  |  |
Loans And Allowance For Loan Losses [Line Items] |  |  |  |
Number of loans, classified as TDRs, to relationships | loan | 10 |  | 7 |
Real Estate Secured [Member] |  |  |  |
Loans And Allowance For Loan Losses [Line Items] |  |  |  |
Number of loans, classified as TDRs, to relationships | loan | 8 |  | 8 |
Commercial And Industrial [Member] |  |  |  |
Loans And Allowance For Loan Losses [Line Items] |  |  |  |
Number of loans, classified as TDRs, to relationships | loan | 4 |  | 4 |
Loans | $ 80,749 |  | $ 79,911 |
Commercial And Industrial [Member] | Maximum [Member] |  |  |  |
Loans And Allowance For Loan Losses [Line Items] |  |  |  |
Number of years for which principally collateralized loans are amortized | 10 years |  |  |
Commercial Construction And Land Development [Member] |  |  |  |
Loans And Allowance For Loan Losses [Line Items] |  |  |  |
Loans | $ 25,467 |  | $ 24,926 |
Commercial Construction And Land Development [Member] | Minimum [Member] |  |  |  |
Loans And Allowance For Loan Losses [Line Items] |  |  |  |
Number of months for which principally collateralized loans are amortized | 6 months |  |  |
Commercial Construction And Land Development [Member] | Maximum [Member] |  |  |  |
Loans And Allowance For Loan Losses [Line Items] |  |  |  |
Number of months for which principally collateralized loans are amortized | 24 months |  |  |
Agricultural And Other Loans To Farmers [Member] |  |  |  |
Loans And Allowance For Loan Losses [Line Items] |  |  |  |
Number of loans, classified as TDRs, to relationships | loan | 4 |  | 2 |
Other Consumer Loans [Member] |  |  |  |
Loans And Allowance For Loan Losses [Line Items] |  |  |  |
Number of loans, classified as TDRs, to relationships | loan | 1 |  | 1 |
Lodging And Hospitality Industry [Member] |  |  |  |
Loans And Allowance For Loan Losses [Line Items] |  |  |  |
Percentage of commercial real estate mortgage portfolio | 31.00% |  |  |
Loans | $ 123,595 |  | $ 98,231 |

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