FDIC Indemnification Asset (Changes in Receivable from FDIC) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
FDIC Indemnification Asset [Roll Forward]
Beginning balance	$ 28,701	$ 93,397	$ 270,192
FDIC Indemnification Asset, Acquisitions	0	5,106	0
Accretion of discounts and premiums, net	(10,899)	(43,422)	(85,651)
Receipt of payments from FDIC	33,296	1,286	(19,373)
Post-acquisition and other adjustments, net	(47,044)	(27,666)	(71,771)
Ending balance	$ 4,054	$ 28,701	$ 93,397