Purchased Loans (Details 7) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Loans acquired with deteriorated credit quality
Total Purchased Credit Deteriorated Loans	$ 6,159,972	$ 5,371,025
Purchased | Receivables Acquired with Deteriorated Credit Quality
Loans acquired with deteriorated credit quality
Total Purchased Credit Deteriorated Loans	271,758	336,165
Purchased | Receivables Acquired with Deteriorated Credit Quality | Commercial, financial, agricultural
Loans acquired with deteriorated credit quality
Total Purchased Credit Deteriorated Loans	11,994	16,489
Purchased | Receivables Acquired with Deteriorated Credit Quality | Lease financing
Loans acquired with deteriorated credit quality
Total Purchased Credit Deteriorated Loans	0	0
Purchased | Receivables Acquired with Deteriorated Credit Quality | Real estate – construction
Loans acquired with deteriorated credit quality
Total Purchased Credit Deteriorated Loans	840	2,749
Purchased | Receivables Acquired with Deteriorated Credit Quality | Real estate – 1-4 family mortgage
Loans acquired with deteriorated credit quality
Total Purchased Credit Deteriorated Loans	71,952	91,649
Purchased | Receivables Acquired with Deteriorated Credit Quality | Real estate – commercial mortgage
Loans acquired with deteriorated credit quality
Total Purchased Credit Deteriorated Loans	184,987	222,610
Purchased | Receivables Acquired with Deteriorated Credit Quality | Installment loans to individuals
Loans acquired with deteriorated credit quality
Total Purchased Credit Deteriorated Loans	$ 1,985	$ 2,668