Quarterly report pursuant to Section 13 or 15(d)

Schedule of Revenue and Percentages of Revenue Sales by Product Line (Detail)

v3.20.2
Schedule of Revenue and Percentages of Revenue Sales by Product Line (Detail) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Disaggregation Of Revenue [Line Items]        
Net revenue $ 2,938 $ 8,645 $ 7,721 $ 18,971
Product Concentration Risk | Sales Revenue, Net        
Disaggregation Of Revenue [Line Items]        
Percentage of sales 100.00% 100.00% 100.00% 100.00%
Laser systems        
Disaggregation Of Revenue [Line Items]        
Net revenue $ 1,091 $ 4,917 $ 3,142 $ 10,880
Laser systems | Product Concentration Risk | Sales Revenue, Net        
Disaggregation Of Revenue [Line Items]        
Percentage of sales 37.10% 56.90% 40.70% 57.40%
Imaging systems        
Disaggregation Of Revenue [Line Items]        
Net revenue   $ 63   $ 615
Imaging systems | Product Concentration Risk | Sales Revenue, Net        
Disaggregation Of Revenue [Line Items]        
Percentage of sales   0.70% 0.00% 3.20%
Consumables and other        
Disaggregation Of Revenue [Line Items]        
Net revenue $ 862 $ 2,084 $ 2,334 $ 4,196
Consumables and other | Product Concentration Risk | Sales Revenue, Net        
Disaggregation Of Revenue [Line Items]        
Percentage of sales 29.30% 24.10% 30.20% 22.10%
Services        
Disaggregation Of Revenue [Line Items]        
Net revenue $ 985 $ 1,578 $ 2,245 $ 3,273
Services | Product Concentration Risk | Sales Revenue, Net        
Disaggregation Of Revenue [Line Items]        
Percentage of sales 33.60% 18.30% 29.10% 17.30%
License fees and royalties        
Disaggregation Of Revenue [Line Items]        
Net revenue   $ 3   $ 7