Loans and the Allowance for Loan Losses (Details 4) (USD $) In Thousands, unless otherwise specified	9 Months Ended	12 Months Ended
	Sep. 30, 2013 Loan	Dec. 31, 2012 Loan
Restructured loans
Number of Loans (loans)	41	36
Pre-Modification Outstanding Recorded Investment	$ 30,894	$ 37,619
Post-Modification Outstanding Recorded Investment	22,236	29,436
Commercial, financial, agricultural [Member]
Restructured loans
Number of Loans (loans)	1	0
Pre-Modification Outstanding Recorded Investment	0	0
Post-Modification Outstanding Recorded Investment	20	0
Lease financing [Member]
Restructured loans
Number of Loans (loans)	0	0
Pre-Modification Outstanding Recorded Investment	0	0
Post-Modification Outstanding Recorded Investment	0	0
Real estate - construction [Member]
Restructured loans
Number of Loans (loans)	0	0
Pre-Modification Outstanding Recorded Investment	0	0
Post-Modification Outstanding Recorded Investment	0	0
Real estate - 1-4 family mortgage [Member]
Restructured loans
Number of Loans (loans)	23	19
Pre-Modification Outstanding Recorded Investment	18,670	18,450
Post-Modification Outstanding Recorded Investment	10,625	10,853
Real estate - commercial mortgage [Member]
Restructured loans
Number of Loans (loans)	16	16
Pre-Modification Outstanding Recorded Investment	12,224	18,985
Post-Modification Outstanding Recorded Investment	11,419	18,409
Installment loans to individuals [Member]
Restructured loans
Number of Loans (loans)	1	1
Pre-Modification Outstanding Recorded Investment	0	184
Post-Modification Outstanding Recorded Investment	$ 172	$ 174