Fair Value Measurements (Summary Of Gains And Losses On Level 3 Assets And Liabilities) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Gains and Losses included in earnings for Level 3 assets & liabilities [Line Items]
Total gains or losses included in earnings	$ 367	$ 1,482	$ (1,352)	$ 5,596
Change in unrealized gains or losses relating to assets still held	367	607	(1,352)	4,580
Loan Fees And Sales [Member]
Gains and Losses included in earnings for Level 3 assets & liabilities [Line Items]
Total gains or losses included in earnings	0	0	0	(9)
Change in unrealized gains or losses relating to assets still held	0	0	0	0
Other Non-Interest Income [Member]
Gains and Losses included in earnings for Level 3 assets & liabilities [Line Items]
Total gains or losses included in earnings	69	7	125	5
Change in unrealized gains or losses relating to assets still held	69	7	125	5
Investment Securities Gains (Losses), Net [Member]
Gains and Losses included in earnings for Level 3 assets & liabilities [Line Items]
Total gains or losses included in earnings	298	1,475	(1,477)	5,600
Change in unrealized gains or losses relating to assets still held	$ 298	$ 600	$ (1,477)	$ 4,575