Acquired and Covered Loans (Details) - Acquired Loans - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Acquired Loans (Details) - Acquired Loans [Line Items]
Non-PCI	$ 800,207	$ 555,362
Total	878,765	615,567
Renewed non-purchased credit impaired loans	98,300	61,600
Acquired loans
Acquired Loans (Details) - Acquired Loans [Line Items]
Non-PCI	782,181	534,506
Total	851,585	584,792
Covered loans
Acquired Loans (Details) - Acquired Loans [Line Items]
Non-PCI	18,026	20,856
Total	27,180	30,775
Receivables acquired with deteriorated credit quality
Acquired Loans (Details) - Acquired Loans [Line Items]
PCI	78,558	60,205
Receivables acquired with deteriorated credit quality | Acquired loans
Acquired Loans (Details) - Acquired Loans [Line Items]
PCI	69,404	50,286
Receivables acquired with deteriorated credit quality | Covered loans
Acquired Loans (Details) - Acquired Loans [Line Items]
PCI	$ 9,154	$ 9,919