Quarterly report pursuant to Section 13 or 15(d)

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

v3.20.1
Concentrations - Summary of Net Revenue from Various Products (Detail) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Concentration Risk [Line Items]    
Net revenue $ 4,783 $ 10,326
Product Concentration Risk | Sales Revenue, Net    
Concentration Risk [Line Items]    
Percentage of sales 100.00% 100.00%
Laser systems    
Concentration Risk [Line Items]    
Net revenue $ 2,051 $ 5,964
Laser systems | Product Concentration Risk | Sales Revenue, Net    
Concentration Risk [Line Items]    
Percentage of sales 42.90% 57.80%
Imaging systems    
Concentration Risk [Line Items]    
Net revenue   $ 552
Imaging systems | Product Concentration Risk | Sales Revenue, Net    
Concentration Risk [Line Items]    
Percentage of sales   5.30%
Consumables and other    
Concentration Risk [Line Items]    
Net revenue $ 1,472 $ 2,112
Consumables and other | Product Concentration Risk | Sales Revenue, Net    
Concentration Risk [Line Items]    
Percentage of sales 30.80% 20.50%
Services    
Concentration Risk [Line Items]    
Net revenue $ 1,260 $ 1,695
Services | Product Concentration Risk | Sales Revenue, Net    
Concentration Risk [Line Items]    
Percentage of sales 26.30% 16.40%
License fees and royalties    
Concentration Risk [Line Items]    
Net revenue   $ 3