Stockholders' Equity (Tables)

9 Months Ended

Sep. 30, 2022

Stockholders' Equity

Schedule of allocation of stock-based compensation expense

Stock-based compensation expense was allocated as follows (in thousands):

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2022		2021		2022		2021
Cost of goods sold	$	29	$	84	$	104	$	219
Research and development		90		134		284		362
Selling and marketing		40		31		120		109
General and administrative		377		638		1,461		1,782
Total	$	536	$	887	$	1,969	$	2,472