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Acquisitions - Narrative (Details) - Coldenhove - USD ($)
$ in Millions
3 Months Ended
Nov. 01, 2017
Mar. 31, 2018
Dec. 31, 2017
Business Acquisition [Line Items]      
Business combination, consideration transferred $ 45.0    
Payment for debt extinguishment or debt prepayment cost $ 3.0    
Inventory purchase accounting adjustments   $ 1.0  
Goodwill, purchase accounting adjustment   $ 1.0  
Contingent liability     $ 2.3