Quarterly report pursuant to Section 13 or 15(d)

Summary of Percentages of Sales by Product line (Detail)

v3.19.2
Summary of Percentages of Sales by Product line (Detail) - Product Concentration Risk - Sales Revenue, Net
 3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Disaggregation Of Revenue [Line Items]        
Percentage of sales 100.00% 100.00% 100.00% 100.00%
Laser systems        
Disaggregation Of Revenue [Line Items]        
Percentage of sales 56.90% 65.20% 57.40% 61.40%
Imaging systems        
Disaggregation Of Revenue [Line Items]        
Percentage of sales 0.70% 3.10% 3.20% 4.30%
Consumables and Other        
Disaggregation Of Revenue [Line Items]        
Percentage of sales 24.20% 18.90% 22.20% 19.60%
Services        
Disaggregation Of Revenue [Line Items]        
Percentage of sales 18.20% 12.80% 17.20% 14.70%