Loans and Leases (Accretable Yield Movement Schedule) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward]
Balance, beginning of period	$ 114,335	$ 185,587	$ 132,829	$ 201,699
Accretion to interest income	(9,977)	(15,149)	(24,175)	(28,432)
Disposals	(2,748)	(8,343)	(11,261)	(15,256)
Reclassifications from nonaccretable difference	9,769	3,267	13,986	7,351
Balance, end of period	$ 111,379	$ 165,362	$ 111,379	$ 165,362