Concentrations - Summary of Net Revenue from Various Products (Detail) - Product Concentration Risk - Sales Revenue, Net	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Concentration Risk [Line Items]
Concentration Risk Percentage	100.00%	100.00%	100.00%
Laser systems
Concentration Risk [Line Items]
Concentration Risk Percentage	67.90%	67.50%	61.90%
Imaging systems
Concentration Risk [Line Items]
Concentration Risk Percentage	5.90%	4.60%	9.00%
Consumables and other
Concentration Risk [Line Items]
Concentration Risk Percentage	13.30%	14.20%	13.70%
Services
Concentration Risk [Line Items]
Concentration Risk Percentage	12.60%	13.30%	15.10%
License fees and royalties
Concentration Risk [Line Items]
Concentration Risk Percentage	0.30%	0.40%	0.30%