Fair Values of Assets and Liabilities (Quantitative Information about Level 3 Fair Value Measurements) (Details) (Level 3 [Member], Nonrecurring [Member], USD $) In Thousands, unless otherwise specified			6 Months Ended
	Jun. 30, 2012 Discounted Appraisal [Member]	Jun. 30, 2012 Discounted Cash Flows [Member]	Jun. 30, 2012 Impaired loans [Member] Discounted Appraisal [Member] Lower range [Member]	Jun. 30, 2012 Impaired loans [Member] Discounted Appraisal [Member] Upper range [Member]	Jun. 30, 2012 Other real estate owned [Member] Discounted Appraisal [Member] Lower range [Member]	Jun. 30, 2012 Other real estate owned [Member] Discounted Appraisal [Member] Upper range [Member]	Jun. 30, 2012 Mortgage servicing rights [Member] Discounted Cash Flows [Member] Lower range [Member]	Jun. 30, 2012 Mortgage servicing rights [Member] Discounted Cash Flows [Member] Upper range [Member]	Jun. 30, 2012 Continuing operations [Member]	Dec. 31, 2011 Continuing operations [Member]
Fair Value Inputs, Quantitative Information [Line Items]
Impaired loans, net	$ 32,054								$ 32,054	$ 31,266
Other real estate owned	50,126								50,126	84,794
Mortgage servicing rights		$ 25
Collateral discounts			6.00%	40.00%	6.00%	40.00%
Prepayment rate							10.00%	30.00%
Discount rate							4.00%	12.00%