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		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, beginning of period	$ 1,102	$ 911	$ 940	$ 818
Net change to other expense	24	77	186	170
Balance, end of period	1,126	988	1,126	988
Unfunded loan commitments	1,319,085	1,007,961	1,319,085	1,007,961
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, beginning of period	97	76	59	33
Net change to other expense	10	(15)	48	28
Balance, end of period	107	61	107	61
Unfunded loan commitments	118,624	61,478	118,624	61,478
Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, beginning of period	778	621	633	575
Net change to other expense	12	84	157	130
Balance, end of period	790	705	790	705
Unfunded loan commitments	896,662	674,210	896,662	674,210
Residential [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, beginning of period	163	162	185	158
Net change to other expense	(1)	7	(23)	11
Balance, end of period	162	169	162	169
Unfunded loan commitments	251,031	226,790	251,031	226,790
Consumer & Other [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance, beginning of period	64	52	63	52
Net change to other expense	3	1	4	1
Balance, end of period	67	53	67	53
Unfunded loan commitments	$ 52,768	$ 45,483	$ 52,768	$ 45,483