Condensed Consolidated Statements of Operations and Comprehensive Loss (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Revenue:
Total revenue	$ 1,334	$ 71	$ 1,396	$ 248
Cost of revenue:
Total cost of revenue	586	0	586	0
Gross profit	748	71	810	248
Operating expenses:
Research and development	6,935	4,536	13,162	8,758
Selling, general and administrative	10,484	1,902	20,816	3,682
Total operating expenses	17,419	6,438	33,978	12,440
Loss from operations	(16,671)	(6,367)	(33,168)	(12,192)
Other income (expense):
Interest income	55	250	123	582
Total other income (expense)	55	250	123	582
Net loss	(16,616)	(6,117)	(33,045)	(11,610)
Other comprehensive loss:
Unrealized gain (loss) on available-for-sale securities	(62)	(255)	(88)	278
Comprehensive loss	$ (16,678)	$ (6,372)	$ (33,133)	$ (11,332)
Net loss per share available to common shareholders, basic (in usd per share)	$ (0.27)	$ (0.63)	$ (0.55)	$ (1.25)
Net loss per share available to common shareholders, diluted (in usd per share)	$ (0.27)	$ (0.63)	$ (0.55)	$ (1.25)
Weighted-average common shares outstanding, basic (in shares)	60,841,657	9,718,393	60,367,433	9,320,520
Weighted average number of shares outstanding, diluted (in shares)	60,841,657	9,718,393	60,367,433	9,320,520
Product
Revenue:
Total revenue	$ 837	$ 0	$ 837	$ 0
Cost of revenue:
Total cost of revenue	504	0	504	0
Related party
Revenue:
Total revenue	380	0	380	0
Cost of revenue:
Total cost of revenue	82	0	82	0
Grant
Revenue:
Total revenue	$ 117	$ 71	$ 179	$ 248