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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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