Goodwill And Other Intangible Assets (Schedule Of Changes In Carrying Amount Of Goodwill And Net Other Intangible Assets) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Goodwill [Roll Forward]
Amortization	$ (594)	$ (766)	$ (1,900)	$ (2,300)
Goodwill [Member]
Goodwill [Roll Forward]
Balance, beginning			125,585
Amortization			0
Impairment reversal			0
Balance, ending	125,585		125,585
Core Deposit Premium [Member]
Goodwill [Roll Forward]
Balance, beginning			6,970
Amortization			(1,681)
Impairment reversal			0
Balance, ending	5,289		5,289
Mortgage Servicing Rights [Member]
Goodwill [Roll Forward]
Balance, beginning			744
Amortization			(266)
Impairment reversal			37
Balance, ending	$ 515		$ 515