Stockholders' Equity (Deficit) (Tables)

3 Months Ended

Mar. 31, 2022

Stockholders' Equity (Deficit)

Schedule of allocation of stock-based compensation expense

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

	Three Months Ended
	March 31,
	2022		2021
Cost of goods sold	$	44	$	60
Research and development		103		107
Selling and marketing		40		35
General and administrative		577		540
Total	$	764	$	742