Loans (Schedule Of Method Used To Measure Impairment Of Impaired Loans) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2012
Schedule Of Measurement Of Impaired Loans [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	$ 89,146	$ 95,232	$ 91,022
Commercial [Member]
Schedule Of Measurement Of Impaired Loans [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	61,402	67,086	64,497
Commercial [Member] | Fair Value Of Collateral [Member]
Schedule Of Measurement Of Impaired Loans [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	10,322	10,776	2,998
Commercial [Member] | Discounted Cash Flow [Member]
Schedule Of Measurement Of Impaired Loans [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	164	165
Owner-Occupied [Member] | Fair Value Of Collateral [Member]
Schedule Of Measurement Of Impaired Loans [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	13,334	14,028	11,263
Owner-Occupied [Member] | Discounted Cash Flow [Member]
Schedule Of Measurement Of Impaired Loans [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	2,673	2,686	2,724
Non-Owner Occupied [Member] | Fair Value Of Collateral [Member]
Schedule Of Measurement Of Impaired Loans [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	6,858	9,468	10,375
Land And Land Development [Member] | Fair Value Of Collateral [Member]
Schedule Of Measurement Of Impaired Loans [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	27,395	29,307	35,746
Land And Land Development [Member] | Discounted Cash Flow [Member]
Schedule Of Measurement Of Impaired Loans [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	656	656	656
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	27,682	28,080	26,196
Non-Jumbo [Member] | Fair Value Of Collateral [Member]
Schedule Of Measurement Of Impaired Loans [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	5,190	5,626	4,692
Non-Jumbo [Member] | Discounted Cash Flow [Member]
Schedule Of Measurement Of Impaired Loans [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	829	692	1,252
Jumbo [Member] | Fair Value Of Collateral [Member]
Schedule Of Measurement Of Impaired Loans [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	21,450	21,543	19,899
Home Equity [Member] | Fair Value Of Collateral [Member]
Schedule Of Measurement Of Impaired Loans [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	213	219	353
Consumer [Member]
Schedule Of Measurement Of Impaired Loans [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	62	66	329
Consumer [Member] | Fair Value Of Collateral [Member]
Schedule Of Measurement Of Impaired Loans [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	$ 62	$ 66	$ 329