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	$ 5,655	$ 2,852	$ 11,291	$ 5,179
Cost of revenue	2,943	1,899	5,801	2,924
Gross profit	2,712	953	5,490	2,255
Operating expenses:
Research and development	7,124	2,746	13,505	5,624
Sales and marketing	4,514	2,630	7,975	4,905
General and administrative	5,561	3,149	11,360	5,562
Total operating expenses	17,199	8,525	32,840	16,091
Loss from operations	(14,487)	(7,572)	(27,350)	(13,836)
Other income (expense), net:
Interest expense, net	(299)	(379)	(635)	(620)
Change in fair value of derivative liabilities	(27)	(1,251)	(4)	(1,547)
Loss on extinguishment of debt				(618)
Other income (expense), net	(12)	3	(24)	(16)
Total other expense, net	(338)	(1,627)	(663)	(2,801)
Loss before provision for income taxes	(14,825)	(9,199)	(28,013)	(16,637)
Provision for income taxes	(6)	(2)	(12)	(6)
Net loss	(14,831)	(9,201)	(28,025)	(16,643)
Unrealized loss on available- for-sale short-term investments	(18)		(34)
Total comprehensive loss	(14,849)	(9,201)	(28,059)	(16,643)
Net loss attributable to common stockholders	$ (14,831)	$ (9,201)	$ (28,025)	$ (16,643)
Net loss per share attributable to common stock holders
Basic (in dollars per share)	$ (0.50)	$ (1.06)	$ (0.95)	$ (2.39)
Diluted (in dollars per share)	$ (0.50)	$ (1.06)	$ (0.95)	$ (2.39)
Weighted average common stock outstanding
Basic (in shares)	29,435,838	8,697,707	29,383,870	6,955,084
Diluted (in shares)	29,435,838	8,697,707	29,383,870	6,955,084
Product sales
Revenue:
Total revenue	$ 4,092	$ 2,120	$ 8,220	$ 3,919
Royalties and other revenue
Revenue:
Total revenue	$ 1,563	$ 732	$ 3,071	$ 1,260