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Securities (Details 2) (Mortgage-backed securities, USD $)
In Thousands, unless otherwise specified
Dec. 31, 2012
Mortgage-backed securities
 
Securities in an Unrealized Loss Position for Less than 12 Months  
Unrealized Losses $ (9)
Fair Value 2,668
Securities in an Unrealized Loss Position for More than 12 Months  
Unrealized Losses (70)
Fair Value $ 1,999