Loans (Schedule Of Method Used To Measure Impairment Of Impaired Loans) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011	Sep. 30, 2011
Schedule Of Measurement Of Impaired Loans [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	$ 101,327	$ 79,056	$ 78,959
Commercial [Member]
Schedule Of Measurement Of Impaired Loans [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	71,552	55,634	57,320
Commercial [Member] | Fair Value Of Collateral [Member]
Schedule Of Measurement Of Impaired Loans [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	12,411	2,969	3,043
Commercial [Member] | Discounted Cash Flow [Member]
Schedule Of Measurement Of Impaired Loans [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance
Owner-Occupied [Member] | Fair Value Of Collateral [Member]
Schedule Of Measurement Of Impaired Loans [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	13,248	9,698	10,613
Owner-Occupied [Member] | Discounted Cash Flow [Member]
Schedule Of Measurement Of Impaired Loans [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	2,698	2,580	2,591
Non-Owner Occupied [Member] | Fair Value Of Collateral [Member]
Schedule Of Measurement Of Impaired Loans [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	12,057	9,790	11,397
Non-Owner Occupied [Member] | Discounted Cash Flow [Member]
Schedule Of Measurement Of Impaired Loans [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance			1,791
Land And Land Development [Member] | Fair Value Of Collateral [Member]
Schedule Of Measurement Of Impaired Loans [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	30,482	29,862	26,360
Land And Land Development [Member] | Discounted Cash Flow [Member]
Schedule Of Measurement Of Impaired Loans [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	656		1,525
Construction [Member] | Fair Value Of Collateral [Member]
Schedule Of Measurement Of Impaired Loans [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance		735
Residential Real Estate [Member]
Schedule Of Measurement Of Impaired Loans [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	29,733	23,414	21,639
Non-Jumbo [Member] | Fair Value Of Collateral [Member]
Schedule Of Measurement Of Impaired Loans [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	5,461	4,488	5,157
Non-Jumbo [Member] | Discounted Cash Flow [Member]
Schedule Of Measurement Of Impaired Loans [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	959	372	1,179
Jumbo [Member] | Fair Value Of Collateral [Member]
Schedule Of Measurement Of Impaired Loans [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	23,094	18,147	14,894
Home Equity [Member] | Fair Value Of Collateral [Member]
Schedule Of Measurement Of Impaired Loans [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	219	407	409
Consumer [Member]
Schedule Of Measurement Of Impaired Loans [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	42	8
Consumer [Member] | Fair Value Of Collateral [Member]
Schedule Of Measurement Of Impaired Loans [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	$ 42	$ 8