Credit Quality of Loans and Allowance for Loan Losses, Summary of Loan Portfolio (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013
Loan portfolio [Abstract]
Total loans	$ 1,224,182	$ 1,137,554	$ 1,118,572
Less allowance for loan losses	(9,075)	(8,779)
Loans, net	1,215,107	1,128,775
Commercial, Financial and Agricultural [Member]
Loan portfolio [Abstract]
Total loans	454,310	403,976
Real Estate - Construction [Member]
Loan portfolio [Abstract]
Total loans	86,238	82,691
Real Estate - Commercial [Member]
Loan portfolio [Abstract]
Total loans	413,565	397,135
Real Estate - Residential [Member]
Loan portfolio [Abstract]
Total loans	153,082	146,841
Installment Loans to Individuals [Member]
Loan portfolio [Abstract]
Total loans	108,581	97,459
Lease Financing Receivable [Member]
Loan portfolio [Abstract]
Total loans	4,750	5,542
Other [Member]
Loan portfolio [Abstract]
Total loans	$ 3,656	$ 3,910