6. Loans (Schedule Of Method Used To Measure Impairment Of Impaired Loans) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012	Jun. 30, 2012
Impaired Financing Receivable, Unpaid Principal Balance	$ 81,208	$ 95,232	$ 98,004
Commercial Loan [Member] | Fair Value Of Collateral [Member]
Impaired Financing Receivable, Unpaid Principal Balance	7,825	10,776	3,031
Commercial Loan [Member] | Discounted Cash Flow [Member]
Impaired Financing Receivable, Unpaid Principal Balance	162	165	3,864
Owner Occupied [Member] | Fair Value Of Collateral [Member]
Impaired Financing Receivable, Unpaid Principal Balance	12,074	14,028	13,299
Owner Occupied [Member] | Discounted Cash Flow [Member]
Impaired Financing Receivable, Unpaid Principal Balance	2,657	2,686	2,709
Non Owner Occupied [Member] | Fair Value Of Collateral [Member]
Impaired Financing Receivable, Unpaid Principal Balance	6,814	9,468	9,987
Land And Land Improvements [Member] | Fair Value Of Collateral [Member]
Impaired Financing Receivable, Unpaid Principal Balance	26,710	29,307	33,160
Land And Land Improvements [Member] | Discounted Cash Flow [Member]
Impaired Financing Receivable, Unpaid Principal Balance	654	656	656
Non Jumbo [Member] | Fair Value Of Collateral [Member]
Impaired Financing Receivable, Unpaid Principal Balance	5,322	5,626	5,997
Non Jumbo [Member] | Discounted Cash Flow [Member]
Impaired Financing Receivable, Unpaid Principal Balance	891	692	1,243
Jumbo [Member] | Fair Value Of Collateral [Member]
Impaired Financing Receivable, Unpaid Principal Balance	17,824	21,543	23,653
Home Equity [Member] | Fair Value Of Collateral [Member]
Impaired Financing Receivable, Unpaid Principal Balance	213	219	360
Consumer Portfolio Segment [Member] | Fair Value Of Collateral [Member]
Impaired Financing Receivable, Unpaid Principal Balance	$ 62	$ 66	$ 45