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Goodwill and Other Intangible Assets (Details Textual) (USD $)
In Millions, unless otherwise specified
 3 Months Ended 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Goodwill and Other Intangible Assets (Textual) [Abstract]        
Amortization of intangible assets $ 0.3 $ 0.3 $ 0.5 $ 0.6
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