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Cash And Due From Banks (Details) (USD $)
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Cash And Due From Banks [Abstract]    
Minimum average daily balance $ 500,000  
Value of certificates of deposits in another bank 0  
Maturity period of securities at acquisition 90 days  
Domestic certificates of deposit $ 13,500,000 $ 12,000,000