Allowance for Non-Covered Loan Loss and Credit Quality (Summary Of Reserve For Unfunded Commitments Activity) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Reserve for Unfunded Commitments [Roll Forward]
Balance, beginning of period	$ 1,223	$ 940
Net change to other expense	46	162
Balance, end of period	1,269	1,102
Unfunded loan commitments	1,493,418	1,258,397
Commercial Real Estate [Member]
Reserve for Unfunded Commitments [Roll Forward]
Balance, beginning of period	172	59
Net change to other expense	(13)	38
Balance, end of period	159	97
Unfunded loan commitments	183,996	86,373
Commercial [Member]
Reserve for Unfunded Commitments [Roll Forward]
Balance, beginning of period	807	633
Net change to other expense	43	145
Balance, end of period	850	778
Unfunded loan commitments	984,672	875,399
Residential [Member]
Reserve for Unfunded Commitments [Roll Forward]
Balance, beginning of period	173	185
Net change to other expense	9	(22)
Balance, end of period	182	163
Unfunded loan commitments	270,510	246,680
Consumer & Other [Member]
Reserve for Unfunded Commitments [Roll Forward]
Balance, beginning of period	71	63
Net change to other expense	7	1
Balance, end of period	78	64
Unfunded loan commitments	$ 54,240	$ 49,945