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Goodwill and Other Intangible Assets (Details Textual) (USD $)
3 Months Ended 9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Goodwill and Other Intangible Assets (Textual) [Abstract]        
Intangible asset amortization expense $ 187,000 $ 185,000 $ 508,000 $ 568,000