Concentrations (Tables)

12 Months Ended

Dec. 31, 2020

Risks And Uncertainties [Abstract]

Summary of Net Revenue from Various Products

Revenue from the Company’s products are as follows:

	Years Ended December 31,
	2020				2019				2018
Laser systems	$	12,342	54.2	%	$	22,842	60.4	%	$	29,733	64.4	%
Imaging systems	$	—	—	%		619	1.6	%		1,694	3.7	%
Consumables and other	$	6,124	26.9	%		7,164	19.0	%		8,287	18.0	%
Services	$	4,314	18.9	%		7,162	19.0	%		6,429	13.9	%
License fees and royalties	$	—	—	%		12	—	%		12	—	%
Total revenue	$	22,780	100.0	%	$	37,799	100.0	%	$	46,155	100.0	%