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Business Combinations - Additional Information (Details)
€ in Millions, $ in Millions
1 Months Ended 9 Months Ended
Jul. 13, 2018
EUR (€)
Jul. 06, 2018
USD ($)
Mar. 16, 2018
USD ($)
Mar. 09, 2018
USD ($)
Apr. 30, 2017
USD ($)
Sep. 30, 2018
USD ($)
Business Acquisition [Line Items]            
Integration costs for acquisitions           $ 0.7
Nutfield            
Business Acquisition [Line Items]            
Purchase price, net of cash acquired         $ 5.5  
Laser Control Systems Limited            
Business Acquisition [Line Items]            
Purchase price, including contingent consideration       $ 1.7    
Potential contingent consideration       $ 0.7    
Photocore AG            
Business Acquisition [Line Items]            
Purchase price, net of cash acquired     $ 2.4      
Lanmark Controls            
Business Acquisition [Line Items]            
Purchase price, including contingent consideration   $ 6.0        
Potential contingent consideration   $ 1.0        
Opto-Tech SRL            
Business Acquisition [Line Items]            
Purchase price, including contingent consideration | € € 18.5          
Potential contingent consideration | € € 4.0