Loans and Allowance for Loan Losses (Details 6) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Aging information for the Company's past due and non-accrual loans
Current or Less Than 30 Days Past Due	$ 790,630	$ 809,338
30 - 89 Days Past Due	3,396	6,559
90 Days Past Due And Still Accruing	406	6
Non-Accrual	28,610	31,081
Total loans	823,042	846,984
Commercial, Financial, and Agricultural
Aging information for the Company's past due and non-accrual loans
Current or Less Than 30 Days Past Due	130,695	126,884
30 - 89 Days Past Due	185	1,821
90 Days Past Due And Still Accruing	15
Non-Accrual	2,028	1,335
Total loans	132,923	130,040
Real Estate Construction - Residential
Aging information for the Company's past due and non-accrual loans
Current or Less Than 30 Days Past Due	21,249	19,390
30 - 89 Days Past Due	160	290
Non-Accrual	2,255	2,497
Total loans	23,664	22,177
Real Estate Construction - Commercial
Aging information for the Company's past due and non-accrual loans
Current or Less Than 30 Days Past Due	41,388	35,117
30 - 89 Days Past Due		607
Non-Accrual	7,101	7,762
Total loans	48,489	43,486
Real Estate Mortgage - Residential
Aging information for the Company's past due and non-accrual loans
Current or Less Than 30 Days Past Due	213,627	213,694
30 - 89 Days Past Due	1,798	2,199
90 Days Past Due And Still Accruing	377
Non-Accrual	4,372	5,330
Total loans	220,174	221,223
Real Estate Mortgage - Commercial
Aging information for the Company's past due and non-accrual loans
Current or Less Than 30 Days Past Due	362,293	390,032
30 - 89 Days Past Due	992	1,122
Non-Accrual	12,591	13,938
Total loans	375,876	405,092
Installment and Other Consumer
Aging information for the Company's past due and non-accrual loans
Current or Less Than 30 Days Past Due	21,378	24,221
30 - 89 Days Past Due	261	520
90 Days Past Due And Still Accruing	14	6
Non-Accrual	263	219
Total loans	$ 21,916	$ 24,966