Stock Compensation Plans (Tables)

6 Months Ended

Jun. 30, 2021

Share-based Payment Arrangement [Abstract]

Schedule of stock-based compensation

Stock-based compensation related to the Company's stock-based awards was recorded as an expense and allocated as follows (in thousands):

	Three months ended June 30,				Six months ended June 30,
	2021		2020		2021		2020
Cost of sales	$	63	$	54	$	105	$	60
Research and development	1,599		553		2,660		1,064
General and administrative	2,497		586		3,869		1,115
Sales and marketing	1,470		159		3,489		292
Total stock-based compensation	$	5,629	$	1,352	$	10,123	$	2,531