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Securities (Details 1) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2012
Dec. 31, 2011
Securities in an Unrealized Loss Position for Less than 12 Months    
AFS Fair Value    $ 28,478
AFS Unrealized Losses    537
Securities in an Unrealized Loss Position for More than 12 Months    
AFS Fair Value 790 12,097
AFS Unrealized Losses 262 589
Total AFS Fair Value 790 40,575
Total AFS Unrealized Losses 262 1,126
US Government-sponsored enterprises securities
    
Securities in an Unrealized Loss Position for Less than 12 Months    
AFS Fair Value    8,984
AFS Unrealized Losses    16
Securities in an Unrealized Loss Position for More than 12 Months    
AFS Fair Value      
AFS Unrealized Losses      
Total AFS Fair Value    8,984
Total AFS Unrealized Losses    16
Mortgage-backed securities
    
Securities in an Unrealized Loss Position for Less than 12 Months    
AFS Fair Value    14,902
AFS Unrealized Losses    61
Securities in an Unrealized Loss Position for More than 12 Months    
AFS Fair Value    9,302
AFS Unrealized Losses    30
Total AFS Fair Value    24,204
Total AFS Unrealized Losses    91
Corporate bonds
    
Securities in an Unrealized Loss Position for Less than 12 Months    
AFS Fair Value    4,588
AFS Unrealized Losses    458
Securities in an Unrealized Loss Position for More than 12 Months    
AFS Fair Value 760 2,773
AFS Unrealized Losses 240 522
Total AFS Fair Value 760 7,361
Total AFS Unrealized Losses 240 980
Equity securities
    
Securities in an Unrealized Loss Position for Less than 12 Months    
AFS Fair Value    4
AFS Unrealized Losses    2
Securities in an Unrealized Loss Position for More than 12 Months    
AFS Fair Value 30 22
AFS Unrealized Losses 22 37
Total AFS Fair Value 30 26
Total AFS Unrealized Losses $ 22 $ 39