Loan Servicing (Activity For MSRs And Related Valuation Allowance) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2011
Servicing Asset at Amortized Value, Balance [Roll Forward]
Carrying amount, net, beginning of period	$ 8,975	$ 10,365	$ 9,301	$ 10,488	$ 10,488
Additions	697	309	1,259	638
Amortization	(817)	(415)	(1,705)	(935)
Changes in valuation inputs & assumptions	(46)	0	(46)	68
Carrying amount, net, end of period	8,809	10,259	8,809	10,259	9,301
Valuation Allowance for Impairment of Recognized Servicing Assets [Roll Forward]
Valuation allowance, beginning of period	1,021	680	1,021	748	748
Changes in valuation allowance	46	0	46	(68)	273
Valuation allowance, end of period	$ 1,067	$ 680	$ 1,067	$ 680	$ 1,021