FDIC Loss Share Receivable (Changes in Receivable from FDIC) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015	Dec. 31, 2014
FDIC Loss Share Receivable [Abstract]
FDIC Indemnification Asset	$ 7,474	$ 21,340	$ 4,054	$ 28,701
Receivable From FDIC For Loss Share Agreements [Roll Forward]
Accretion of discounts and premiums, net	(2,375)	(5,031)
Receipt of payments from FDIC	9,871	5,762
Post-acquisition and other adjustments, net	$ (4,076)	$ (8,092)