Quarterly report pursuant to Section 13 or 15(d)

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

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Concentrations - Summary of Net Revenue from Various Products (Detail) (Product Concentration Risk, Revenue)
3 Months Ended 9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Concentration Risk [Line Items]        
Percentage of net revenue 100.00% 100.00% 100.00% 100.00%
Laser systems
       
Concentration Risk [Line Items]        
Percentage of net revenue 57.90% 65.80% 60.20% 67.90%
Imaging systems
       
Concentration Risk [Line Items]        
Percentage of net revenue 11.00% 7.80% 9.50% 8.10%
Consumables and other
       
Concentration Risk [Line Items]        
Percentage of net revenue 12.60% 13.20% 13.60% 11.90%
Services
       
Concentration Risk [Line Items]        
Percentage of net revenue 18.20% 12.90% 16.30% 11.70%
License fees and royalties
       
Concentration Risk [Line Items]        
Percentage of net revenue 0.30% 0.30% 0.40% 0.40%