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Loans and Allowance for Loan Losses (Details 2) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Summary of the allowance for loan losses      
Balance, beginning of period $ 13,809 $ 14,565 $ 14,797
Additions:      
Provision for loan losses 8,900 11,523 15,254
Deductions:      
Loans charged off 8,789 13,206 16,189
Less recoveries on loans (922) (927) (703)
Net loans charged off (7,867) 12,279 15,486
Balance, end of period 14,842 13,809 14,565
Commercial, Financial, and Agricultural [Member]
     
Summary of the allowance for loan losses      
Balance, beginning of period 1,804 2,931 2,773
Additions:      
Provision for loan losses 1,732 837 1,908
Deductions:      
Loans charged off 1,760 2,157 1,903
Less recoveries on loans (161) (193) (153)
Net loans charged off 1,599 1,964 1,750
Balance, end of period 1,937 1,804 2,931
Real Estate Construction - Residential [Member]
     
Summary of the allowance for loan losses      
Balance, beginning of period 1,188 2,067 348
Additions:      
Provision for loan losses (523) 914 2,622
Deductions:      
Loans charged off 0 1,858 933
Less recoveries on loans (67) (65) (30)
Net loans charged off (67) 1,793 903
Balance, end of period 732 1,188 2,067
Real Estate Construction - Commercial [Member]
     
Summary of the allowance for loan losses      
Balance, beginning of period 1,562 1,339 1,740
Additions:      
Provision for loan losses 126 485 4,133
Deductions:      
Loans charged off 0 512 4,556
Less recoveries on loans (23) (250) (22)
Net loans charged off (23) 262 4,534
Balance, end of period 1,711 1,562 1,339
Real Estate Mortgage - Residential [Member]
     
Summary of the allowance for loan losses      
Balance, beginning of period 3,251 3,922 3,488
Additions:      
Provision for loan losses 955 1,104 4,740
Deductions:      
Loans charged off 977 1,883 4,534
Less recoveries on loans (158) (108) (228)
Net loans charged off 819 1,775 4,306
Balance, end of period 3,387 3,251 3,922
Real Estate Mortgage - Commercial [Member]
     
Summary of the allowance for loan losses      
Balance, beginning of period 5,734 3,458 4,693
Additions:      
Provision for loan losses 6,318 8,593 2,577
Deductions:      
Loans charged off 5,466 6,420 3,841
Less recoveries on loans (248) (103) (29)
Net loans charged off 5,218 6,317 3,812
Balance, end of period 6,834 5,734 3,458
Installment Loans to Individuals [Member]
     
Summary of the allowance for loan losses      
Balance, beginning of period 267 231 380
Additions:      
Provision for loan losses 293 204 32
Deductions:      
Loans charged off 586 376 422
Less recoveries on loans (265) (208) (241)
Net loans charged off 321 168 181
Balance, end of period 239 267 231
Unallocated [Member]
     
Summary of the allowance for loan losses      
Balance, beginning of period 3 617 1,375
Additions:      
Provision for loan losses (1) (614) (758)
Deductions:      
Loans charged off 0 0 0
Less recoveries on loans 0 0 0
Net loans charged off 0 0 0
Balance, end of period $ 2 $ 3 $ 617