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Proforma Disclosure (Details) - USD ($)
$ / shares in Units, $ in Millions
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Business Combinations [Abstract]    
Business Acquisition, Pro Forma Revenue $ 414.6 $ 456.3
Business Acquisition, Pro Forma Net Income (Loss) $ (48.8) $ (65.1)
Business Acquisition ProForma Earnings Per Share Basic And Diluted $ (0.63) $ (0.74)