Loans and Allowance for Loan Losses (Details 7) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	$ 823,042	$ 846,984
Commercial, Financial, and Agricultural
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	132,923	130,040
Real Estate Construction - Residential
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	23,664	22,177
Real Estate Construction - Commercial
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	48,489	43,486
Real Estate Mortgage - Residential
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	220,174	221,223
Real Estate Mortgage - Commercial
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	375,876	405,092
Watch
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	68,177	82,341
Watch | Commercial, Financial, and Agricultural
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	14,825	14,814
Watch | Real Estate Construction - Residential
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	933	4,580
Watch | Real Estate Construction - Commercial
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	3,763	6,459
Watch | Real Estate Mortgage - Residential
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	23,272	26,063
Watch | Real Estate Mortgage - Commercial
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	24,985	29,753
Watch | Installment and other Consumer
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	399	672
Substandard
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	34,247	25,838
Substandard | Commercial, Financial, and Agricultural
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	8,506	6,485
Substandard | Real Estate Construction - Residential
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	2,564	396
Substandard | Real Estate Construction - Commercial
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	1,082	2,035
Substandard | Real Estate Mortgage - Residential
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	7,794	5,472
Substandard | Real Estate Mortgage - Commercial
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	13,885	11,027
Substandard | Installment and other Consumer
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	416	423
Non-accrual
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Financing receivable	28,610	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	2,028	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	2,255	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	7,101	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	4,372	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	12,591	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	263	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	131,034	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	25,359	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	5,752	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	11,946	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	35,438	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	51,461	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	$ 1,078	$ 1,314