6. Loans (Schedule Of Method Used To Measure Impairment Of Impaired Loans) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2012
Impaired Financing Receivable, Unpaid Principal Balance	$ 73,179	$ 95,232	$ 101,327
Commercial Loan [Member] | Fair Value Of Collateral [Member]
Impaired Financing Receivable, Unpaid Principal Balance	5,997	10,776	12,411
Commercial Loan [Member] | Discounted Cash Flow [Member]
Impaired Financing Receivable, Unpaid Principal Balance	160	165	0
Owner Occupied [Member] | Fair Value Of Collateral [Member]
Impaired Financing Receivable, Unpaid Principal Balance	9,054	14,028	13,248
Owner Occupied [Member] | Discounted Cash Flow [Member]
Impaired Financing Receivable, Unpaid Principal Balance	2,497	2,686	2,698
Non Owner Occupied [Member] | Fair Value Of Collateral [Member]
Impaired Financing Receivable, Unpaid Principal Balance	5,884	9,468	12,057
Land And Land Improvements [Member] | Fair Value Of Collateral [Member]
Impaired Financing Receivable, Unpaid Principal Balance	24,870	29,307	30,482
Land And Land Improvements [Member] | Discounted Cash Flow [Member]
Impaired Financing Receivable, Unpaid Principal Balance	649	656	656
Non Jumbo [Member] | Fair Value Of Collateral [Member]
Impaired Financing Receivable, Unpaid Principal Balance	5,133	5,626	5,461
Non Jumbo [Member] | Discounted Cash Flow [Member]
Impaired Financing Receivable, Unpaid Principal Balance	884	692	959
Jumbo [Member] | Fair Value Of Collateral [Member]
Impaired Financing Receivable, Unpaid Principal Balance	17,786	21,543	23,094
Home Equity [Member] | Fair Value Of Collateral [Member]
Impaired Financing Receivable, Unpaid Principal Balance	213	219	219
Consumer Portfolio Segment [Member] | Fair Value Of Collateral [Member]
Impaired Financing Receivable, Unpaid Principal Balance	$ 52	$ 66	$ 42