Purchase Credit Impaired ("PCI") Loans - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
FDIC proceeds from loss share termination [Line Items]
Removal of remaining clawback liability, FDIC loss share termination	$ 3,500
Removal of remaining FDIC receivable, FDIC loss share termination	7,200
One-time pretax charge	2,400
PCI loans outstanding	98,600	$ 135,300
Net payment received from FDIC for loss share termination	1,300
Expense recorded related to Clawback Liability	$ 760	$ 1,201	$ 951