Quarterly report pursuant to Section 13 or 15(d)

Concentrations - Summary of Net Revenue from Various Products (Detail)

v3.8.0.1
Concentrations - Summary of Net Revenue from Various Products (Detail) - Product Concentration Risk - Sales Revenue, Net
 3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Concentration Risk [Line Items]        
Concentration Risk Percentage 100.00% 100.00% 100.00% 100.00%
Laser systems        
Concentration Risk [Line Items]        
Concentration Risk Percentage 58.60% 71.90% 61.30% 68.70%
Imaging systems        
Concentration Risk [Line Items]        
Concentration Risk Percentage 10.20% 2.60% 7.80% 4.50%
Consumables and other        
Concentration Risk [Line Items]        
Concentration Risk Percentage 16.20% 12.40% 16.00% 13.50%
Services        
Concentration Risk [Line Items]        
Concentration Risk Percentage 14.70% 12.90% 14.60% 13.00%
License fees and royalties        
Concentration Risk [Line Items]        
Concentration Risk Percentage 0.30% 0.20% 0.30% 0.30%