Loans and the Allowance for Loan Losses (Details 8) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014		Dec. 31, 2013
Loans acquired with deteriorated credit quality
Acquired with deteriorated credit quality	$ 400,985		$ 448,930
Impaired Covered Loans
Loans acquired with deteriorated credit quality
Acquired with deteriorated credit quality	20,299		24,519
Other Covered Loans
Loans acquired with deteriorated credit quality
Acquired with deteriorated credit quality	146,830		157,155
Not Covered Loans
Loans acquired with deteriorated credit quality
Acquired with deteriorated credit quality	233,856		267,256
Commercial, financial, agricultural
Loans acquired with deteriorated credit quality
Acquired with deteriorated credit quality	28,349		35,484
Commercial, financial, agricultural | Impaired Covered Loans
Loans acquired with deteriorated credit quality
Acquired with deteriorated credit quality	0		0
Commercial, financial, agricultural | Other Covered Loans
Loans acquired with deteriorated credit quality
Acquired with deteriorated credit quality	7,677		9,546
Commercial, financial, agricultural | Not Covered Loans
Loans acquired with deteriorated credit quality
Acquired with deteriorated credit quality	20,672		25,938
Lease financing
Loans acquired with deteriorated credit quality
Acquired with deteriorated credit quality	0		0
Lease financing | Impaired Covered Loans
Loans acquired with deteriorated credit quality
Acquired with deteriorated credit quality	0		0
Lease financing | Other Covered Loans
Loans acquired with deteriorated credit quality
Acquired with deteriorated credit quality	0		0
Lease financing | Not Covered Loans
Loans acquired with deteriorated credit quality
Acquired with deteriorated credit quality	0		0
Real estate – construction
Loans acquired with deteriorated credit quality
Acquired with deteriorated credit quality	1,877		2,885
Real estate – construction | Impaired Covered Loans
Loans acquired with deteriorated credit quality
Acquired with deteriorated credit quality	0		0
Real estate – construction | Other Covered Loans
Loans acquired with deteriorated credit quality
Acquired with deteriorated credit quality	1,648		1,648
Real estate – construction | Not Covered Loans
Loans acquired with deteriorated credit quality
Acquired with deteriorated credit quality	229		1,237
Real estate – 1-4 family mortgage
Loans acquired with deteriorated credit quality
Acquired with deteriorated credit quality	92,210		102,562
Real estate – 1-4 family mortgage | Impaired Covered Loans
Loans acquired with deteriorated credit quality
Acquired with deteriorated credit quality	1,255		835
Real estate – 1-4 family mortgage | Other Covered Loans
Loans acquired with deteriorated credit quality
Acquired with deteriorated credit quality	48,361		53,631
Real estate – 1-4 family mortgage | Not Covered Loans
Loans acquired with deteriorated credit quality
Acquired with deteriorated credit quality	42,594		48,096
Real estate – commercial mortgage
Loans acquired with deteriorated credit quality
Acquired with deteriorated credit quality	272,993		301,190
Real estate – commercial mortgage | Impaired Covered Loans
Loans acquired with deteriorated credit quality
Acquired with deteriorated credit quality	19,044		23,684
Real estate – commercial mortgage | Other Covered Loans
Loans acquired with deteriorated credit quality
Acquired with deteriorated credit quality	89,122		92,302
Real estate – commercial mortgage | Not Covered Loans
Loans acquired with deteriorated credit quality
Acquired with deteriorated credit quality	164,827		185,204
Installment loans to individuals
Loans acquired with deteriorated credit quality
Acquired with deteriorated credit quality	5,556	[1]	6,809	[1]
Installment loans to individuals | Impaired Covered Loans
Loans acquired with deteriorated credit quality
Acquired with deteriorated credit quality	0		0
Installment loans to individuals | Other Covered Loans
Loans acquired with deteriorated credit quality
Acquired with deteriorated credit quality	22		28
Installment loans to individuals | Not Covered Loans
Loans acquired with deteriorated credit quality
Acquired with deteriorated credit quality	$ 5,534		$ 6,781

[1] Includes lease financing receivables.