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Loans and Allowance for Loan Losses (Details 1) (USD $)
 3 Months Ended 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Summary of the allowance for loan losses        
Balance, beginning of period $ 14,640,000 $ 12,402,000 $ 13,809,224 $ 14,565,000
Additions:        
Provision for loan losses 1,500,000 1,883,000 3,200,000 3,633,000
Deductions:        
Loans charged off 1,061,000 809,000 2,252,000 4,947,000
Less recoveries on loans (235,000) (387,000) (557,000) (612,000)
Net loans charged off 826,000 422,000 1,695,000 4,335,000
Balance, end of period 15,313,584 13,863,000 15,313,584 13,863,000
Commercial, Financial, and Agricultural [Member]
        
Summary of the allowance for loan losses        
Balance, beginning of period 2,722,000 2,257,000 1,804,000 2,931,000
Additions:        
Provision for loan losses 363,000 313,000 1,230,000 406,000
Deductions:        
Loans charged off 69,000 45,000 104,000 873,000
Less recoveries on loans (29,000) (8,000) (115,000) (69,000)
Net loans charged off 40,000 37,000 (11,000) 804,000
Balance, end of period 3,045,000 2,553,000 3,045,000 2,553,000
Real Estate Construction - Residential [Member]
        
Summary of the allowance for loan losses        
Balance, beginning of period 727,000 991,000 1,188,000 2,067,000
Additions:        
Provision for loan losses (54,000) (6,000) (546,000) 404,000
Deductions:        
Loans charged off       1,547,000
Less recoveries on loans (36,000) (1,000) (67,000) (62,000)
Net loans charged off (36,000) (1,000) (67,000) 1,485,000
Balance, end of period 709,000 986,000 709,000 986,000
Real Estate Construction - Commercial [Member]
        
Summary of the allowance for loan losses        
Balance, beginning of period 1,410,000 1,356,000 1,562,000 1,339,000
Additions:        
Provision for loan losses 211,000 (276,000) 59,000 (259,000)
Deductions:        
Less recoveries on loans (23,000) (250,000) (23,000) (250,000)
Net loans charged off (23,000) (250,000) (23,000) (250,000)
Balance, end of period 1,644,000 1,330,000 1,644,000 1,330,000
Real Estate Mortgage - Residential [Member]
        
Summary of the allowance for loan losses        
Balance, beginning of period 3,563,000 3,118,000 3,251,000 3,922,000
Additions:        
Provision for loan losses 380,000 306,000 795,000 533,000
Deductions:        
Loans charged off 422,000 466,000 577,000 1,539,000
Less recoveries on loans (39,000) (32,000) (91,000) (74,000)
Net loans charged off 383,000 434,000 486,000 1,465,000
Balance, end of period 3,560,000 2,990,000 3,560,000 2,990,000
Real Estate Mortgage - Commercial [Member]
        
Summary of the allowance for loan losses        
Balance, beginning of period 5,976,000 3,709,000 5,734,000 3,458,000
Additions:        
Provision for loan losses 525,000 1,264,000 1,552,000 2,091,000
Deductions:        
Loans charged off 438,000 160,000 1,300,000 741,000
Less recoveries on loans (44,000) (24,000) (121,000) (29,000)
Net loans charged off 394,000 136,000 1,179,000 712,000
Balance, end of period 6,107,000 4,837,000 6,107,000 4,837,000
Installment Loans to Individuals [Member]
        
Summary of the allowance for loan losses        
Balance, beginning of period 237,000 223,000 267,000 231,000
Additions:        
Provision for loan losses 63,000 62,000 96,000 107,000
Deductions:        
Loans charged off 132,000 138,000 271,000 247,000
Less recoveries on loans (64,000) (72,000) (140,000) (128,000)
Net loans charged off 68,000 66,000 131,000 119,000
Balance, end of period 232,000 219,000 232,000 219,000
Unallocated [Member]
        
Summary of the allowance for loan losses        
Balance, beginning of period 5,000 748,000 3,000 617,000
Additions:        
Provision for loan losses 12,000 220,000 14,000 351,000
Deductions:        
Balance, end of period $ 17,000 $ 968,000 $ 17,000 $ 968,000