Loans (Schedule Of Troubled Debt Restructurings Within The Previous 12 Months) (Details) (USD $) In Thousands, unless otherwise specified	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	9	19	27	40
Recorded Investment	$ 8,559	$ 13,978	$ 21,618	$ 30,348
Income C R E [Member]
Financing Receivable, Modifications [Line Items]
Number	9	7	19	23
Recorded Investment	10,396	12,134	18,840	24,427
Residential C R E [Member]
Financing Receivable, Modifications [Line Items]
Number	1	3	3	15
Recorded Investment	73	766	259	18,290
Home Equity [Member]
Financing Receivable, Modifications [Line Items]
Number	15	7	31	32
Recorded Investment	1,749	1,088	3,379	5,081
R E Installment Loans [Member]
Financing Receivable, Modifications [Line Items]
Number	4	5	33	23
Recorded Investment	210	566	3,392	2,033
Credit Card Portfolio Class [Member]
Financing Receivable, Modifications [Line Items]
Number	4	1	19	35
Recorded Investment	17	72	69	3,766
Commercial Financial And Industrial [Member]
Financing Receivable, Modifications [Line Items]
Number	9	19	27	40
Recorded Investment	8,559	13,978	21,618	30,348
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Number	10	10	22	38
Recorded Investment	10,469	12,900	19,099	42,717
Consumer Real Estate Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Number	19	12	64	55
Recorded Investment	1,959	1,654	6,771	7,114
Credit Card And Other Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Number	4	1	19	35
Recorded Investment	17	72	69	3,766
Troubled Debt Restructurings That Subsequently Defaulted [Member]
Financing Receivable, Modifications [Line Items]
Number	48	46	141	204
Recorded Investment	23,747	31,574	51,072	121,393
Permanent Mortgage Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Number	6	4	9	36
Recorded Investment	$ 2,743	$ 2,970	$ 3,515	$ 37,448