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Schedule of Revenue by Geographic Ares (Details) - USD ($)
$ in Millions
 3 Months Ended 12 Months Ended
Dec. 31, 2017
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2017
Dec. 31, 2016
Revenues from External Customers and Long-Lived Assets [Line Items]                    
Revenue United States                 $ 134.5 $ 242.8
Revenue Japan                 49.0 49.1
Revenue Belgium                 34.9  
Revenue Other Countries                   19.4
Revenue Foreign                 83.9 68.5
Revenues $ 116.9 $ 50.3 $ 44.0 $ 7.2 $ 136.5 $ 21.4 $ 63.4 $ 90.0 $ 218.4 $ 311.3