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Securities (Details 3) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2012
Dec. 31, 2011
Amortized cost and fair value of investment portfolio by contractual maturities of debt securities    
Due in one year or less, Amortized Cost $ 25,735  
Due in one year or less, Fair Value 25,871  
Due from one to five years, Amortized Cost 16,162  
Due from one to five years, Fair Value 16,604  
Due from five to ten years, Amortized Cost 11,316  
Due from five to ten years, Fair Value 11,721  
Due after ten years, Amortized Cost 4,509  
Due after ten years, Fair Value 4,714  
Mortgage-backed securities, Amortized Cost 5,589  
Mortgage-backed securities, Fair Value 5,615  
Amortized Cost, Total 63,311 88,976
Fair Value, Total $ 64,525 $ 90,344