Loans (Schedule Of Troubled Debt Restructurings Occurring During The Year) (Details) (USD $)	3 Months Ended			9 Months Ended
	Sep. 30, 2012 number		Sep. 30, 2011 number	Sep. 30, 2012 number		Sep. 30, 2011 number
General C I [Member]
Financing Receivable, Modifications [Line Items]
Number	8		4	19		14
Pre-Modification Outstanding Recorded Investment	$ 4,285,000		$ 1,563,000	$ 22,406,000		$ 13,374,000
Post-Modification Outstanding Recorded Investment	4,244,000		1,549,000	22,264,000		13,356,000
Commercial Financial And Industrial [Member]
Financing Receivable, Modifications [Line Items]
Number	8		4	19		14
Pre-Modification Outstanding Recorded Investment	4,285,000		1,563,000	22,406,000		13,374,000
Post-Modification Outstanding Recorded Investment	4,244,000		1,549,000	22,264,000		13,356,000
Income C R E [Member]
Financing Receivable, Modifications [Line Items]
Number	3		2	9		9
Pre-Modification Outstanding Recorded Investment	4,538,000		3,759,000	13,045,000		10,290,000
Post-Modification Outstanding Recorded Investment	4,144,000		3,748,000	12,502,000		10,210,000
Residential C R E [Member]
Financing Receivable, Modifications [Line Items]
Number	0		2	2		5
Pre-Modification Outstanding Recorded Investment	0		732,000	88,000		2,435,000
Post-Modification Outstanding Recorded Investment	0		739,000	87,000		2,510,000
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Number	3		4	11		14
Pre-Modification Outstanding Recorded Investment	4,538,000		4,491,000	13,133,000		12,725,000
Post-Modification Outstanding Recorded Investment	4,144,000		4,487,000	12,589,000		12,720,000
Home Equity [Member]
Financing Receivable, Modifications [Line Items]
Number	737		59	831		168
Pre-Modification Outstanding Recorded Investment	17,087,000	[1]	9,072,000	27,730,000	[1]	20,918,000
Post-Modification Outstanding Recorded Investment	16,916,000	[1]	9,030,000	27,511,000	[1]	20,817,000
Discharged Bankruptcy Loans	11,600,000			11,600,000
R E Installment Loans [Member]
Financing Receivable, Modifications [Line Items]
Number	567		63	677		146
Pre-Modification Outstanding Recorded Investment	13,604,000	[2]	15,258,000	26,782,000	[2]	20,650,000
Post-Modification Outstanding Recorded Investment	13,445,000	[2]	15,391,000	25,710,000	[2]	20,856,000
Discharged Bankruptcy Loans	6,200,000			6,200,000
Consumer Real Estate Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Number	1,304		122	1,508		314
Pre-Modification Outstanding Recorded Investment	30,691,000		24,330,000	54,512,000		41,568,000
Post-Modification Outstanding Recorded Investment	30,361,000		24,421,000	53,221,000		41,673,000
Permanent Mortgage Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Number	61		0	123		85
Pre-Modification Outstanding Recorded Investment	16,641,000	[3]	0	66,308,000	[3]	54,403,000
Post-Modification Outstanding Recorded Investment	16,648,000	[3]	0	66,710,000	[3]	57,291,000
Discharged Bankruptcy Loans	10,200,000			10,200,000
Credit Card Portfolio Class [Member]
Financing Receivable, Modifications [Line Items]
Number	26		24	188		72
Pre-Modification Outstanding Recorded Investment	101,000		105,000	1,063,000		312,000
Post-Modification Outstanding Recorded Investment	97,000		102,000	1,025,000		301,000
Credit Card And Other Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Number	26		24	188		72
Pre-Modification Outstanding Recorded Investment	101,000		105,000	1,063,000		312,000
Post-Modification Outstanding Recorded Investment	97,000		102,000	1,025,000		301,000
Troubled Debt Restructurings [Member]
Financing Receivable, Modifications [Line Items]
Number	1,402		154	1,849		499
Pre-Modification Outstanding Recorded Investment	56,256,000		30,489,000	157,422,000		122,382,000
Post-Modification Outstanding Recorded Investment	$ 55,494,000		$ 30,559,000	$ 155,809,000		$ 125,341,000

[1] Balances as of September 30, 2012 includes $11.6 million associated with implementation of the recently issued regulatory guidance.

[2] Balances as of September 30, 2012 includes $6.2 million associated with implementation of the recently issued regulatory guidance.

[3] Balances as of September 30, 2012 includes $10.2 million associated with implementation of the recently issued regulatory guidance.