Fair Value, Qualitative Information about Level 3 Fair Value Measurements for Financial Instruments (Details) (USD $)
In Thousands, unless otherwise specified
 9 Months Ended
Sep. 30, 2012
Impaired Loans Real-Estate Secured [Member]
  
Fair Value Inputs, Assets, Quantitative Information [Line Items]  
Fair Value Estimate $ 7,768
Valuation Techniques Appraisal (1) or Internal Valuation (2) [1],[2]
Unobservable Input Appraisal Adjustments Liquidation Expenses (3) [3]
Impaired Loans Real-Estate Secured [Member] | Minimum [Member]
  
Fair Value Inputs, Assets, Quantitative Information [Line Items]  
Range (Weighted Average) 10.00%
Impaired Loans Real-Estate Secured [Member] | Maximum [Member]
  
Fair Value Inputs, Assets, Quantitative Information [Line Items]  
Range (Weighted Average) 30.00%
Impaired Loans-Non-Real Estate Secured [Member]
  
Fair Value Inputs, Assets, Quantitative Information [Line Items]  
Fair Value Estimate 2,119
Valuation Techniques Appraisal (1) or Discounted Cash Flow [1]
Unobservable Input Appraisal Adjustments Liquidation Expenses (3) [3]
Impaired Loans-Non-Real Estate Secured [Member] | Minimum [Member]
  
Fair Value Inputs, Assets, Quantitative Information [Line Items]  
Range (Weighted Average) 10.00%
Impaired Loans-Non-Real Estate Secured [Member] | Maximum [Member]
  
Fair Value Inputs, Assets, Quantitative Information [Line Items]  
Range (Weighted Average) 20.00%
Real estate owned [Member]
  
Fair Value Inputs, Assets, Quantitative Information [Line Items]  
Fair Value Estimate $ 2,444
Valuation Techniques Appraisal (1) or Internal Valuation (2) [1],[2]
Unobservable Input Appraisal Adjustments Liquidation Expenses (3) [3]
Real estate owned [Member] | Minimum [Member]
  
Fair Value Inputs, Assets, Quantitative Information [Line Items]  
Range (Weighted Average) 7.00%
Real estate owned [Member] | Maximum [Member]
  
Fair Value Inputs, Assets, Quantitative Information [Line Items]  
Range (Weighted Average) 30.00%
[1] Fair Value is generally determined through independent appraisals of the underlying collateral, which generally included various level 3 inputs which are not identifiable
[2] Internal valuations may be conducted to determine Fair Value for assets with nominal carrying balances
[3] Appraisals may be adjusted by management for qualitative factors such as economic conditions and estimated liquidation expenses