Loans and Allowance for Loan Losses (Details 7) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	$ 838,990	$ 846,984
Commercial, Financial, and Agricultural
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	136,643	130,040
Real Estate Construction - Residential
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	23,647	22,177
Real Estate Construction - Commercial
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	48,146	43,486
Real Estate Mortgage - Residential
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	217,828	221,223
Real Estate Mortgage - Commercial
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	389,706	405,092
Installment and other Consumer
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable		1,314
Watch
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	66,432	82,341
Watch | Commercial, Financial, and Agricultural
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	16,058	14,814
Watch | Real Estate Construction - Residential
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	1,744	4,580
Watch | Real Estate Construction - Commercial
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	3,399	6,459
Watch | Real Estate Mortgage - Residential
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	21,694	26,063
Watch | Real Estate Mortgage - Commercial
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	23,041	29,753
Watch | Installment and other Consumer
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	496	672
Substandard
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	36,562	25,838
Substandard | Commercial, Financial, and Agricultural
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	8,453	6,485
Substandard | Real Estate Construction - Residential
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	2,910	396
Substandard | Real Estate Construction - Commercial
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	2,336	2,035
Substandard | Real Estate Mortgage - Residential
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	10,362	5,472
Substandard | Real Estate Mortgage - Commercial
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	12,023	11,027
Substandard | Installment and other Consumer
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	478	423
Non-accrual
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	30,840	31,081
Non-accrual | Commercial, Financial, and Agricultural
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	1,957	1,335
Non-accrual | Real Estate Construction - Residential
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	2,280	2,497
Non-accrual | Real Estate Construction - Commercial
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	7,831	7,762
Non-accrual | Real Estate Mortgage - Residential
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	4,702	5,330
Non-accrual | Real Estate Mortgage - Commercial
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	13,797	13,938
Non-accrual | Installment and other Consumer
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	273	219
Total Watch, Substandard, and Non-Accrual Loans
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	133,834	139,260
Total Watch, Substandard, and Non-Accrual Loans | Commercial, Financial, and Agricultural
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	26,468	22,634
Total Watch, Substandard, and Non-Accrual Loans | Real Estate Construction - Residential
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	6,934	7,473
Total Watch, Substandard, and Non-Accrual Loans | Real Estate Construction - Commercial
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	13,566	16,256
Total Watch, Substandard, and Non-Accrual Loans | Real Estate Mortgage - Residential
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	36,758	36,865
Total Watch, Substandard, and Non-Accrual Loans | Real Estate Mortgage - Commercial
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	48,861	54,718
Total Watch, Substandard, and Non-Accrual Loans | Installment and other Consumer
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	$ 1,247	$ 1,314