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Stock Purchase (Details) (USD $)
3 Months Ended 6 Months Ended 3 Months Ended
Jun. 30, 2012
Mar. 30, 2011
Jun. 30, 2012
Dec. 31, 2011
Aug. 10, 2011
Mar. 30, 2011
Executive Officer [Member]
Mar. 31, 2011
Executive Officer [Member]
Stock Purchase (Textual) [Abstract]              
Shares purchased from a retiring executive           73,741  
Total transaction value of shares purchased from retiring executive $ 356,000   $ 356,000 $ 356,000     $ 430,647
Stock Purchase (Additional Textual) [Abstract]              
Current market price of purchased shares   $ 5.84          
Authorized share buy back program, number of shares         500,000    
Share repurchase period     18 months        
Repurchased shares of common stock 62,519   62,519        
Maximum number of shares that may yet be purchased 345,691   345,691