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Income (Loss) per Share (Details Textual)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Earnings Per Share Basic and Diluted [Line Items]      
Antidilutive Securities Excluded From Computation Of Earnings Per Share, Amount 1.5 0.1 1.1
Employee Stock Option [Member]
     
Earnings Per Share Basic and Diluted [Line Items]      
Antidilutive Securities Excluded From Computation Of Earnings Per Share, Amount 1.5