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Repurchase of Common Stock (Details Textual) (USD $)
3 Months Ended
Jun. 30, 2012
Sep. 30, 2012
Dec. 31, 2008
Stock Repurchase Program, Number of Shares Authorized to be Repurchased     1,000,000
Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased   72,000  
Stock Repurchased During Period, Shares 9,000    
Stock Repurchased During Period, Shares Par Value (in dollars per share) $ 3.26