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Fair Value Unobservable Inputs (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2012
Trust Preferred Securities [Member] | Fair Value, Measurements, Recurring [Member] | Discounted Cash Flow, Credit Spread [Member]
  
Schedule Of Fair Value Significant Unobservable Inputs Used [Line Items]  
Unobservable Inputs, Weighted Average Of Input Credit Spreads 643
Trust Preferred Securities [Member] | Fair Value, Measurements, Recurring [Member] | Carrying (Reported) Amount, Fair Value Disclosure [Member]
  
Schedule Of Fair Value Significant Unobservable Inputs Used [Line Items]  
Assets, Fair Value Disclosure 652
Impaired Loans [Member] | Fair Value, Measurements, Nonrecurring [Member] | Appraisal, Appraisal Discount [Member]
  
Schedule Of Fair Value Significant Unobservable Inputs Used [Line Items]  
Unobservable Input, Weighted Average of Input Percent 6.8
Impaired Loans [Member] | Fair Value, Measurements, Nonrecurring [Member] | Carrying (Reported) Amount, Fair Value Disclosure [Member]
  
Schedule Of Fair Value Significant Unobservable Inputs Used [Line Items]  
Assets, Fair Value Disclosure 10,272
Other Real Estate Owned [Member] | Fair Value, Measurements, Nonrecurring [Member] | Appraisal, Appraisal Discount [Member]
  
Schedule Of Fair Value Significant Unobservable Inputs Used [Line Items]  
Unobservable Input, Weighted Average of Input Percent 9.8
Other Real Estate Owned [Member] | Fair Value, Measurements, Nonrecurring [Member] | Carrying (Reported) Amount, Fair Value Disclosure [Member]
  
Schedule Of Fair Value Significant Unobservable Inputs Used [Line Items]  
Assets, Fair Value Disclosure 4,919
Mortgage Servicing Rights [Member] | Fair Value, Measurements, Nonrecurring [Member] | Discounted Cash Flow, Prepayment Speed [Member]
  
Schedule Of Fair Value Significant Unobservable Inputs Used [Line Items]  
Unobservable Input, Weighted Average of Input Percent 23.7
Mortgage Servicing Rights [Member] | Fair Value, Measurements, Nonrecurring [Member] | Discounted Cash Flow, Discount Rate [Member]
  
Schedule Of Fair Value Significant Unobservable Inputs Used [Line Items]  
Unobservable Input, Weighted Average of Input Percent 11.0
Mortgage Servicing Rights [Member] | Fair Value, Measurements, Nonrecurring [Member] | Carrying (Reported) Amount, Fair Value Disclosure [Member]
  
Schedule Of Fair Value Significant Unobservable Inputs Used [Line Items]  
Assets, Fair Value Disclosure 1,526