Loans and the Allowance for Loan Losses (Details 2) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Impaired loans
Unpaid Contractual Principal Balance	$ 168,965	$ 161,473
Recorded Investment With Allowance	55,083	56,924
Recorded Investment With No Allowance	58,084	50,827
Total Recorded Investment	113,167	107,751
Related Allowance	15,262	14,650
Commercial, financial, agricultural
Impaired loans
Unpaid Contractual Principal Balance	9,534	6,575
Recorded Investment With Allowance	723	743
Recorded Investment With No Allowance	4,761	2,043
Total Recorded Investment	5,484	2,786
Related Allowance	253	260
Lease financing
Impaired loans
Unpaid Contractual Principal Balance	0	0
Recorded Investment With Allowance	0	0
Recorded Investment With No Allowance	0	0
Total Recorded Investment	0	0
Related Allowance	0	0
Real estate – construction
Impaired loans
Unpaid Contractual Principal Balance	2,834	2,447
Recorded Investment With Allowance	0	0
Recorded Investment With No Allowance	1,882	1,648
Total Recorded Investment	1,882	1,648
Related Allowance	0	0
Real estate – 1-4 family mortgage
Impaired loans
Unpaid Contractual Principal Balance	32,727	42,868
Recorded Investment With Allowance	21,831	25,374
Recorded Investment With No Allowance	4,481	8,542
Total Recorded Investment	26,312	33,916
Related Allowance	7,285	7,353
Real estate – commercial mortgage
Impaired loans
Unpaid Contractual Principal Balance	123,870	108,963
Recorded Investment With Allowance	32,529	30,624
Recorded Investment With No Allowance	46,960	38,517
Total Recorded Investment	79,489	69,141
Related Allowance	7,724	7,036
Installment loans to individuals
Impaired loans
Unpaid Contractual Principal Balance	0	620
Recorded Investment With Allowance	0	183
Recorded Investment With No Allowance	0	77
Total Recorded Investment	0	260
Related Allowance	$ 0	$ 1