Loans (Schedule Of Loans Individually Evaluated For Impairment) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		12 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012
Financing Receivable, Impaired [Line Items]
Without a related allowance, Recorded Investment	$ 51,384	$ 58,403	$ 49,322
Without a related allowance, Unpaid Principal Balance	51,403	58,423	49,357
Without a related allowance, Average Impaired Balance	50,664	45,629	37,470
Without a related allowance, Interest Income Recognized while impaired	2,265	1,315	1,582
With a related allowance, Recorded Investment	37,728	32,581	45,868
With a related allowance, Unpaid Principal Balance	37,743	32,599	45,875
With a related allowance, Related Allowance	6,465	5,710	7,097
With a related allowance, Average Impaired Balance	37,742	26,445	41,925
With a related allowance, Interest Income Recognized while impaired	659	361	788
Recorded Investment	89,112	90,984	95,190
Unpaid Principal Balance	89,146	91,022	95,232
Related Allowance	6,465	5,710	7,097
Average Impaired Balance	88,406	72,074	79,395
Interest Income Recognized while impaired	2,924	1,676	2,370
Commercial [Member]
Financing Receivable, Impaired [Line Items]
Without a related allowance, Recorded Investment	9,442	2,307	10,518
Without a related allowance, Unpaid Principal Balance	9,446	2,306	10,537
Without a related allowance, Average Impaired Balance	9,446	1,697	3,131
Without a related allowance, Interest Income Recognized while impaired	439	30	134
With a related allowance, Recorded Investment	1,031	692	404
With a related allowance, Unpaid Principal Balance	1,040	692	404
With a related allowance, Related Allowance	403	203	85
With a related allowance, Average Impaired Balance	1,040	692	515
With a related allowance, Interest Income Recognized while impaired	8	4	6
Recorded Investment	61,384	64,482	67,060
Unpaid Principal Balance	61,402	64,497	67,086
Related Allowance	2,413	4,271	3,443
Average Impaired Balance	60,663	50,815	54,739
Interest Income Recognized while impaired	2,216	1,330	1,825
Owner-Occupied [Member]
Financing Receivable, Impaired [Line Items]
Without a related allowance, Recorded Investment	9,882	11,036	9,992
Without a related allowance, Unpaid Principal Balance	9,886	11,045	9,996
Without a related allowance, Average Impaired Balance	9,886	9,004	8,528
Without a related allowance, Interest Income Recognized while impaired	455	335	368
With a related allowance, Recorded Investment	6,121	2,941	6,719
With a related allowance, Unpaid Principal Balance	6,121	2,942	6,718
With a related allowance, Related Allowance	437	140	461
With a related allowance, Average Impaired Balance	6,120	2,942	4,442
With a related allowance, Interest Income Recognized while impaired	282	141	187
Non-Owner Occupied [Member]
Financing Receivable, Impaired [Line Items]
Without a related allowance, Recorded Investment	5,430	6,307	6,143
Without a related allowance, Unpaid Principal Balance	5,432	6,308	6,145
Without a related allowance, Average Impaired Balance	5,432	6,046	6,056
Without a related allowance, Interest Income Recognized while impaired	271	305	304
With a related allowance, Recorded Investment	1,426	4,065	3,321
With a related allowance, Unpaid Principal Balance	1,426	4,067	3,323
With a related allowance, Related Allowance	152	439	286
With a related allowance, Average Impaired Balance	1,427	3,366	3,341
With a related allowance, Interest Income Recognized while impaired	29	116	115
Land And Land Development [Member]
Financing Receivable, Impaired [Line Items]
Without a related allowance, Recorded Investment	15,623	18,732	11,596
Without a related allowance, Unpaid Principal Balance	15,622	18,732	11,596
Without a related allowance, Average Impaired Balance	14,883	10,920	11,093
Without a related allowance, Interest Income Recognized while impaired	575	334	367
With a related allowance, Recorded Investment	12,429	17,667	18,367
With a related allowance, Unpaid Principal Balance	12,429	17,670	18,367
With a related allowance, Related Allowance	1,421	3,070	2,611
With a related allowance, Average Impaired Balance	12,429	16,148	17,633
With a related allowance, Interest Income Recognized while impaired	157	65	344
Construction [Member]
Financing Receivable, Impaired [Line Items]
Without a related allowance, Recorded Investment
Without a related allowance, Unpaid Principal Balance
Without a related allowance, Average Impaired Balance
Without a related allowance, Interest Income Recognized while impaired
With a related allowance, Recorded Investment		735
With a related allowance, Unpaid Principal Balance		735
With a related allowance, Related Allowance		419
With a related allowance, Average Impaired Balance
With a related allowance, Interest Income Recognized while impaired
Residential Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	27,667	26,173	28,064
Unpaid Principal Balance	27,682	26,196	28,080
Related Allowance	4,038	1,438	3,638
Average Impaired Balance	27,682	21,248	24,622
Interest Income Recognized while impaired	705	345	544
Non-Jumbo [Member]
Financing Receivable, Impaired [Line Items]
Without a related allowance, Recorded Investment	3,523	3,876	3,497
Without a related allowance, Unpaid Principal Balance	3,531	3,886	3,505
Without a related allowance, Average Impaired Balance	3,531	3,139	3,040
Without a related allowance, Interest Income Recognized while impaired	153	99	125
With a related allowance, Recorded Investment	2,487	2,056	2,812
With a related allowance, Unpaid Principal Balance	2,488	2,058	2,813
With a related allowance, Related Allowance	303	574	394
With a related allowance, Average Impaired Balance	2,487	892	2,378
With a related allowance, Interest Income Recognized while impaired	87	34	77
Jumbo [Member]
Financing Receivable, Impaired [Line Items]
Without a related allowance, Recorded Investment	7,264	15,661	7,347
Without a related allowance, Unpaid Principal Balance	7,265	15,662	7,349
Without a related allowance, Average Impaired Balance	7,265	14,621	5,399
Without a related allowance, Interest Income Recognized while impaired	360	200	272
With a related allowance, Recorded Investment	14,180	4,227	14,189
With a related allowance, Unpaid Principal Balance	14,185	4,237	14,194
With a related allowance, Related Allowance	3,707	753	3,216
With a related allowance, Average Impaired Balance	14,185	2,243	13,585
With a related allowance, Interest Income Recognized while impaired	94	1	59
Home Equity [Member]
Financing Receivable, Impaired [Line Items]
Without a related allowance, Recorded Investment	185	191	191
Without a related allowance, Unpaid Principal Balance	186	191	191
Without a related allowance, Average Impaired Balance	186	191	191
Without a related allowance, Interest Income Recognized while impaired	11	11	11
With a related allowance, Recorded Investment	28	162	28
With a related allowance, Unpaid Principal Balance	27	162	28
With a related allowance, Related Allowance	28	111	28
With a related allowance, Average Impaired Balance	28	162	29
With a related allowance, Interest Income Recognized while impaired
Consumer [Member]
Financing Receivable, Impaired [Line Items]
Without a related allowance, Recorded Investment		293	38
Without a related allowance, Unpaid Principal Balance		293	38
Without a related allowance, Average Impaired Balance		11	32
Without a related allowance, Interest Income Recognized while impaired		1	1
With a related allowance, Recorded Investment	35	36	28
With a related allowance, Unpaid Principal Balance	35	36	28
With a related allowance, Related Allowance		1	16
With a related allowance, Average Impaired Balance	35		2
With a related allowance, Interest Income Recognized while impaired	1
Recorded Investment	61	329	66
Unpaid Principal Balance	62	329	66
Related Allowance	14	1	16
Average Impaired Balance	61	11	34
Interest Income Recognized while impaired	$ 3	$ 1	$ 1