Loans (Schedule Of Method Used To Measure Impairment Of Impaired Loans) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011	Jun. 30, 2011
Schedule Of Measurement Of Impaired Loans [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	$ 98,004	$ 79,056	$ 79,829
Commercial [Member]
Schedule Of Measurement Of Impaired Loans [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	66,706	55,634	55,572
Commercial [Member] | Fair Value Of Collateral [Member]
Schedule Of Measurement Of Impaired Loans [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	3,031	2,969	1,638
Commercial [Member] | Discounted Cash Flow [Member]
Schedule Of Measurement Of Impaired Loans [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	3,864
Owner-Occupied [Member] | Fair Value Of Collateral [Member]
Schedule Of Measurement Of Impaired Loans [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	13,299	9,698	11,103
Owner-Occupied [Member] | Discounted Cash Flow [Member]
Schedule Of Measurement Of Impaired Loans [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	2,709	2,580	2,598
Non-Owner Occupied [Member] | Fair Value Of Collateral [Member]
Schedule Of Measurement Of Impaired Loans [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	9,987	9,790	11,458
Non-Owner Occupied [Member] | Discounted Cash Flow [Member]
Schedule Of Measurement Of Impaired Loans [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance			1,794
Land And Land Development [Member] | Fair Value Of Collateral [Member]
Schedule Of Measurement Of Impaired Loans [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	33,160	29,862	25,456
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	31,253	23,414	24,219
Non-Jumbo [Member] | Fair Value Of Collateral [Member]
Schedule Of Measurement Of Impaired Loans [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	5,997	4,488	6,516
Non-Jumbo [Member] | Discounted Cash Flow [Member]
Schedule Of Measurement Of Impaired Loans [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	1,243	372	1,188
Jumbo [Member] | Fair Value Of Collateral [Member]
Schedule Of Measurement Of Impaired Loans [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	23,653	18,147	15,974
Home Equity [Member] | Fair Value Of Collateral [Member]
Schedule Of Measurement Of Impaired Loans [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	360	407	541
Consumer [Member]
Schedule Of Measurement Of Impaired Loans [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	45	8	38
Consumer [Member] | Fair Value Of Collateral [Member]
Schedule Of Measurement Of Impaired Loans [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	$ 45	$ 8	$ 38