Loans (Schedule Of Troubled Debt Restructurings Occurring During The Year) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013 number	Mar. 31, 2012 number
General C I [Member]
Financing Receivable, Modifications [Line Items]
Number	5	4
Pre-Modification Outstanding Recorded Investment	$ 1,242	$ 583
Post-Modification Outstanding Recorded Investment	1,238	576
Commercial Financial And Industrial [Member]
Financing Receivable, Modifications [Line Items]
Number	5	4
Pre-Modification Outstanding Recorded Investment	1,242	583
Post-Modification Outstanding Recorded Investment	1,238	576
Income C R E [Member]
Financing Receivable, Modifications [Line Items]
Number	0	3
Pre-Modification Outstanding Recorded Investment	0	7,961
Post-Modification Outstanding Recorded Investment	0	7,829
Residential C R E [Member]
Financing Receivable, Modifications [Line Items]
Number	0	1
Pre-Modification Outstanding Recorded Investment	0	50
Post-Modification Outstanding Recorded Investment	0	50
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Number	0	4
Pre-Modification Outstanding Recorded Investment	0	8,011
Post-Modification Outstanding Recorded Investment	0	7,879
Home Equity [Member]
Financing Receivable, Modifications [Line Items]
Number	115	34
Pre-Modification Outstanding Recorded Investment	7,759	4,081
Post-Modification Outstanding Recorded Investment	7,551	4,073
R E Installment Loans [Member]
Financing Receivable, Modifications [Line Items]
Number	179	59
Pre-Modification Outstanding Recorded Investment	6,285	7,543
Post-Modification Outstanding Recorded Investment	6,233	7,611
Consumer Real Estate Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Number	294	93
Pre-Modification Outstanding Recorded Investment	14,044	11,624
Post-Modification Outstanding Recorded Investment	13,784	11,684
Permanent Mortgage Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Number	12	38
Pre-Modification Outstanding Recorded Investment	4,737	29,893
Post-Modification Outstanding Recorded Investment	4,852	30,064
Credit Card And Other Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Number	11	22
Pre-Modification Outstanding Recorded Investment	62	91
Post-Modification Outstanding Recorded Investment	59	87
Troubled Debt Restructurings [Member]
Financing Receivable, Modifications [Line Items]
Number	322	161
Pre-Modification Outstanding Recorded Investment	20,085	50,202
Post-Modification Outstanding Recorded Investment	$ 19,933	$ 50,290