Condensed Consolidated Statements of Operations and Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Revenue:
Total revenue	$ 3,621	$ 1,334	$ 6,934	$ 1,396
Total cost of revenue	2,012	586	4,080	586
Gross profit	1,609	748	2,854	810
Operating expenses:
Research and development	10,871	6,935	21,607	13,162
Selling, general and administrative	14,172	10,484	28,466	20,816
Total operating expenses	25,043	17,419	50,073	33,978
Loss from operations	(23,434)	(16,671)	(47,219)	(33,168)
Other income (expense):
Interest income	676	55	819	123
Other expense	(57)	0	(61)	0
Total other income	619	55	758	123
Net loss	(22,815)	(16,616)	(46,461)	(33,045)
Other comprehensive loss:
Unrealized loss on available-for-sale securities	(886)	(62)	(2,577)	(88)
Comprehensive loss	$ (23,701)	$ (16,678)	$ (49,038)	$ (33,133)
Net loss per share attributable to common shareholders, basic (in usd per share)	$ (0.37)	$ (0.27)	$ (0.75)	$ (0.55)
Net loss per share attributable to common shareholders, diluted (in usd per share)	$ (0.37)	$ (0.27)	$ (0.75)	$ (0.55)
Weighted-average common shares outstanding, basic (in shares)	62,376,571	60,841,657	62,191,068	60,367,433
Weighted-average common shares outstanding, diluted (in shares)	62,376,571	60,841,657	62,191,068	60,367,433
Product
Revenue:
Total revenue	$ 2,406	$ 837	$ 4,555	$ 837
Total cost of revenue	1,643	504	3,303	504
Service
Revenue:
Total revenue	57	0	137	0
Total cost of revenue	15	0	29	0
Related party
Revenue:
Total revenue	1,108	380	2,178	380
Total cost of revenue	354	82	748	82
Grant and other
Revenue:
Total revenue	$ 50	$ 117	$ 64	$ 179