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Goodwill and Other Intangibles (Details) (USD $)
9 Months Ended
Sep. 30, 2012
Dec. 31, 2011
Carrying amount of goodwill    
Gross amount $ 21,238,512 $ 21,238,512
Accumulated impairment losses (10,549,941) (7,508,941)
Impairment charge (3,041,000)  
Net carrying value $ 10,688,571 $ 13,729,571