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		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Mar. 31, 2013	Mar. 31, 2012
Reserve for Unfunded Commitments [Roll Forward]
Balance, beginning of period			$ 1,223	$ 940	$ 1,327	$ 1,126
Net change to other expense	48	1,631	152	1,817
Balance, end of period	1,375	2,757	1,375	2,757	1,327	1,126
Unfunded loan commitments	1,610,735	1,351,165	1,610,735	1,351,165
Commercial Real Estate [Member]
Reserve for Unfunded Commitments [Roll Forward]
Balance, beginning of period			172	59	196	107
Net change to other expense	3	18	27	66
Balance, end of period	199	125	199	125	196	107
Unfunded loan commitments	222,879	139,479	222,879	139,479
Commercial [Member]
Reserve for Unfunded Commitments [Roll Forward]
Balance, beginning of period			807	633	855	790
Net change to other expense	11	1,607	59	1,764
Balance, end of period	866	2,397	866	2,397	855	790
Unfunded loan commitments	1,011,643	900,875	1,011,643	900,875
Residential [Member]
Reserve for Unfunded Commitments [Roll Forward]
Balance, beginning of period			173	185	200	162
Net change to other expense	24	2	51	(21)
Balance, end of period	224	164	224	164	200	162
Unfunded loan commitments	322,612	255,499	322,612	255,499
Consumer & Other [Member]
Reserve for Unfunded Commitments [Roll Forward]
Balance, beginning of period			71	63	76	67
Net change to other expense	10	4	15	8
Balance, end of period	86	71	86	71	76	67
Unfunded loan commitments	$ 53,601	$ 55,312	$ 53,601	$ 55,312