Concentrations - Summary of Net Revenue from Various Products (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Concentration Risk [Line Items]
Net revenue	$ 10,131	$ 10,467
Laser systems
Concentration Risk [Line Items]
Net revenue	$ 5,175	$ 6,265
Laser systems | Product Concentration Risk | Sales Revenue, Net
Concentration Risk [Line Items]
Percentage of sales	51.10%	59.80%
Consumables and other
Concentration Risk [Line Items]
Net revenue	$ 3,469	$ 3,033
Consumables and other | Product Concentration Risk | Sales Revenue, Net
Concentration Risk [Line Items]
Percentage of sales	34.20%	29.00%
Services
Concentration Risk [Line Items]
Net revenue	$ 1,487	$ 1,169
Services | Product Concentration Risk | Sales Revenue, Net
Concentration Risk [Line Items]
Percentage of sales	14.70%	11.20%
Product And Services [Member] | Product Concentration Risk | Sales Revenue, Net
Concentration Risk [Line Items]
Percentage of sales	100.00%	100.00%