Loans and Allowance for Loan Losses (Troubled Debt Restructuring) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013 loans	Dec. 31, 2012 loans	Dec. 31, 2011 loans
Financing Receivable, Modifications [Line Items]
Number of loans	19	17	40
Pre-modification outstanding recorded investment	$ 9,043	$ 3,562	$ 16,114
Post-modification outstanding recorded investment	8,814	2,694	16,114
Number of loans modified, extended terms	3
Number of loans modified, interest rate	2
Number of loans modified, extended terms and interest rate	14
Commercial and agricultural [Member]
Financing Receivable, Modifications [Line Items]
Number of loans	0	1	8
Pre-modification outstanding recorded investment	0	312	806
Post-modification outstanding recorded investment	0	127	806
Real estate - construction [Member]
Financing Receivable, Modifications [Line Items]
Number of loans	2	8	8
Pre-modification outstanding recorded investment	125	1,994	5,162
Post-modification outstanding recorded investment	125	1,335	5,162
Real estate - mortgage, 1-4 family residential [Member]
Financing Receivable, Modifications [Line Items]
Number of loans	12	3	9
Pre-modification outstanding recorded investment	3,387	566	406
Post-modification outstanding recorded investment	3,451	565	406
Real estate - mortgage, commercial [Member]
Financing Receivable, Modifications [Line Items]
Number of loans	5	5	15
Pre-modification outstanding recorded investment	5,531	690	9,740
Post-modification outstanding recorded investment	5,238	667	9,740
Consumer [Member]
Financing Receivable, Modifications [Line Items]
Number of loans	0		0
Pre-modification outstanding recorded investment	0		0
Post-modification outstanding recorded investment	$ 0		$ 0