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Fair Value (Details 2) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2012
Corporate notes and bonds [Member]
 
Quantitative Information About Level 3 Fair Value Measurements  
Fair value $ 1,980
Corporate notes and bonds [Member] | Constant prepayment rate [Member] | Discounted cash flow [Member]
 
Quantitative Information About Level 3 Fair Value Measurements  
Input utilized one   
Corporate notes and bonds [Member] | Probability of default [Member] | Discounted cash flow [Member]
 
Quantitative Information About Level 3 Fair Value Measurements  
Input utilized one   
Corporate notes and bonds [Member] | Discount rate [Member] | Discounted cash flow [Member]
 
Quantitative Information About Level 3 Fair Value Measurements  
Input utilized one 9.60%
Pooled trust preferred [Member]
 
Quantitative Information About Level 3 Fair Value Measurements  
Fair value $ 600
Pooled trust preferred [Member] | Discount rate [Member] | Discounted cash flow [Member]
 
Quantitative Information About Level 3 Fair Value Measurements  
Input utilized one 13.00%
Pooled trust preferred [Member] | Collateral Default Rate [Member] | Discounted cash flow [Member]
 
Quantitative Information About Level 3 Fair Value Measurements  
Input utilized two 2% annually for 2 years; 0.36% thereafter
Pooled trust preferred [Member] | Recovery probability [Member] | Discounted cash flow [Member]
 
Quantitative Information About Level 3 Fair Value Measurements  
Input utilized two 10%, lagged 2 years