FDIC Indemnification Asset - (Narrative) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Banking and Thrift [Abstract]
Consideration Paid On Termination Of FDIC Agreement	$ 15,100
Gain on termination of FDIC agreement	4,900
Settlement Payment To FDIC	18,200
FDIC Indemnification Asset, Disposals	38,700
Payments/receipts to/from FDIC related to loss share assets	2,600
Amortization	20,751	$ 27,741
Decrease in carrying value of FDIC indemnification asset	$ (2,644)	$ (2,044)