Acquired and Covered Loans (Details) - Acquired and Covered Loans - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Acquired Loans [Line Items]
Non-PCI	$ 628,718	$ 555,362
Total	690,385	615,567
Acquired loans
Acquired Loans [Line Items]
Non-PCI	613,339	534,506
Total	667,111	584,792
Covered Loans
Acquired Loans [Line Items]
Non-PCI	15,379	20,856
Total	23,274	30,775
Receivables acquired with deteriorated credit quality
Acquired Loans [Line Items]
PCI	61,667	60,205
Receivables acquired with deteriorated credit quality | Acquired loans
Acquired Loans [Line Items]
PCI	53,772	50,286
Receivables acquired with deteriorated credit quality | Covered Loans
Acquired Loans [Line Items]
PCI	$ 7,895	$ 9,919