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Goodwill and Other Intangible Assets (Details Textual) (USD $)
In Millions, unless otherwise specified
 3 Months Ended 9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Goodwill and Other Intangible Assets (Additional Textual) [Abstract]        
Amortization of intangible assets $ 0.3 $ 0.3 $ 0.9 $ 0.8
Finite lived intangible assets amortization expense current year 1.0   1.0  
Finite-lived intangible assets, amortization expense, next twelve months 0.3   0.3  
Finite-lived intangible assets, amortization expense, year two 0.2   0.2  
Finite-lived intangible assets, amortization expense, year three 0.2   0.2  
Finite-lived intangible assets, amortization expense, year four $ 0.1   $ 0.1