CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Revenues [Abstract]
Total revenues	$ 1,137	$ 308
Cost of revenues:
Total cost of revenues	1,375	180
Gross profit	(238)	128
Research and development expenses	25,315	11,379
General and administrative expenses	6,872	8,217
Selling and marketing expenses	1,648	659
Operating Expenses, Total	33,835	20,255
Operating loss	(34,073)	(20,127)
Interest income	283	3
Other income, net	633	666
Loss before income taxes	(33,157)	(19,458)
Income taxes	0	0
Net loss	(33,157)	(19,458)
Unrealized loss on available-for-sale securities	(2,455)	(29)
Total comprehensive loss	$ (35,612)	$ (19,487)
Net loss per share, basic and diluted	$ (0.15)	$ (0.12)
Weighted-average shares used in computing net loss per share, basic and diluted	216,017,186	163,955,593
Product
Revenues [Abstract]
Total revenues	$ 211	$ 293
Cost of revenues:
Total cost of revenues	920	180
Professional service
Revenues [Abstract]
Total revenues	926	15
Cost of revenues:
Total cost of revenues	$ 455	$ 0