Loans and Allowance for Loan Losses (Troubled Debt Restructuring) (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015 USD ($) loans	Sep. 30, 2014 USD ($) loans	Sep. 30, 2015 USD ($) loans	Sep. 30, 2014 USD ($) loans
Financing Receivable, Modifications [Line Items]
Number of loans | loans	5	2	7	19
Pre-modification outstanding recorded investment	$ 968	$ 297	$ 1,783	$ 4,681
Post-modification outstanding recorded investment	$ 968	$ 297	$ 1,783	$ 4,757
Loans modified, extended terms | loans				2
Loans modified, interest rate modification | loans			1	17
Commercial and agricultural [Member]
Financing Receivable, Modifications [Line Items]
Number of loans | loans	0	0	0	2
Pre-modification outstanding recorded investment	$ 0	$ 0	$ 0	$ 94
Post-modification outstanding recorded investment	$ 0	$ 0	$ 0	$ 94
Real estate - construction [Member]
Financing Receivable, Modifications [Line Items]
Number of loans | loans	2	1	3	2
Pre-modification outstanding recorded investment	$ 280	$ 37	$ 649	$ 523
Post-modification outstanding recorded investment	$ 280	$ 37	$ 649	$ 523
Real estate - mortgage, 1-4 family residential [Member]
Financing Receivable, Modifications [Line Items]
Number of loans | loans	2	1	3	8
Pre-modification outstanding recorded investment	$ 61	$ 260	$ 507	$ 1,012
Post-modification outstanding recorded investment	$ 61	$ 260	$ 507	$ 1,088
Real estate - mortgage, commercial [Member]
Financing Receivable, Modifications [Line Items]
Number of loans | loans	1	0	1	7
Pre-modification outstanding recorded investment	$ 627	$ 0	$ 627	$ 3,052
Post-modification outstanding recorded investment	$ 627	$ 0	$ 627	$ 3,052
Consumer [Member]
Financing Receivable, Modifications [Line Items]
Number of loans | loans	0	0	0	0
Pre-modification outstanding recorded investment	$ 0	$ 0	$ 0	$ 0
Post-modification outstanding recorded investment	$ 0	$ 0	$ 0	$ 0