CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Revenue	$ 9,487	$ 8,306
Cost of revenue	5,103	4,177
Gross profit	4,384	4,129
Operating expenses:
Research and development	5,398	3,905
Selling, general and administrative	12,003	9,745
Total operating expenses	17,401	13,650
Loss from operations	(13,017)	(9,521)
Other income:
Interest income	1,017	171
Interest expense	(551)	(20)
Other income (expense), net	19	(45)
Total other income, net	485	106
Net loss	$ (12,532)	$ (9,415)
Net loss per share, basic	$ (0.39)	$ (0.30)
Net loss per share, diluted	$ (0.39)	$ (0.30)
Weighted average common shares outstanding, basic	31,965,799	31,210,567
Weighted average common shares outstanding, diluted	31,965,799	31,210,567
Product revenue
Revenue	$ 7,022	$ 6,508
Cost of revenue	3,786	2,972
Service revenue
Revenue	2,240	1,521
Cost of revenue	1,270	1,069
Contract revenue
Revenue	225	277
Cost of revenue	$ 47	$ 136