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Business Combinations (Details) - BTI Systems, Inc [Member] - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Apr. 01, 2016
Mar. 31, 2016
Jun. 30, 2016
Jun. 30, 2016
Business Acquisition [Line Items]        
Ownership interest prior to acquisition of remaining ownership interest   12.00%    
Ownership interest 100.00%      
Payments to acquire business $ 26.1      
Fair value of pre-existing investment 17.1      
Convertible debt held during pre-existing investment   $ 0.9    
Aggregate value of acquisition including previous investment 44.1      
Fair value of pre-existing investment 18.0      
Repayment of liabilities incurred 18.6      
Fair value of share-based compensation assumed $ 8.6      
Acquisition related costs     $ 1.3 $ 4.2
Restructuring charges related to employee severance     $ 2.4 $ 2.4