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Restrictions on Cash Balance	12 Months Ended
Restrictions on Cash Balance	Dec. 31, 2011
Restrictions on Cash Balance Disclosure [Abstract]
Restrictions on Cash Balance	(3) Restrictions on Cash Balance The Company is required to maintain an average reserve balance with the Federal Reserve Bank or maintain such reserve balance in the form of cash. The amount of the required reserve balance at December 31, 2011 and 2010 was $653 thousand and $2.7 million, respectively, and was met by holding cash with the Federal Reserve Bank.