Condensed Consolidated Statements of Operations and Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Income Statement [Abstract]
Revenue	$ 2,465	$ 1,583
Cost of revenue	806	1,162
Total gross profit	1,659	421
Operating expenses:
Research and development	8,525	10,915
General and administrative	7,566	11,296
Sales and marketing	3,084	2,900
Total operating expenses	19,175	25,111
Loss from operations	(17,516)	(24,690)
Other income, net:
Interest expense	(1,140)	(212)
Change in fair value of Term Loan	1,199	0
Gain on investment in marketable equity securities	1,660	0
Change in fair value of warrant liabilities	(2,652)	638
Other income (expense), net	1,137	(142)
Total other income, net	204	284
Net loss	$ (17,312)	$ (24,406)
Net loss per share, basic (in usd per share)	$ (0.11)	$ (0.20)
Net loss per share, diluted (in usd per share)	$ (0.11)	$ (0.20)
Weighted-average shares used in computing net loss per share, basic (in shares)	161,308,490	123,144,097
Weighted-average shares used in computing net loss per share, diluted (in shares)	161,308,490	123,144,097
Comprehensive loss:
Net loss	$ (17,312)	$ (24,406)
Foreign currency translation adjustment, net of tax	47	(19)
Net comprehensive loss	$ (17,265)	$ (24,425)