Condensed Consolidated Statements of Operations and Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Operating expenses
Research and development	$ 46,160	$ 114,935
Sales and marketing	5,585	6,186
General and administrative	27,584	27,880
Loss on disposal of property and equipment	3,698	0
Total operating expenses	83,027	149,001
Loss from operations	(83,027)	(149,001)
Change in fair value measurements	94,917	1,186
Loss on settlement of notes payable	(3,021)	0
Interest expense	(4,651)	(3,746)
Related party interest expense	(140)	(622)
Other income (expense), net	2,409	(915)
Income (loss) before income taxes	6,487	(153,098)
Income tax provision	0	0
Net income (loss)	$ 6,487	$ (153,098)
Per share information:
Net income (loss) per share of Common Stock attributable to common stockholders - basic (in dollars per share)	$ 0.01	$ (0.48)
Net income (loss) per share of Common Stock attributable to common stockholders - diluted – diluted (in dollars per share)	$ (0.07)	$ (0.48)
Weighted average shares used in computing net income (loss) per share of Common Stock – basic (in shares)	657,565,442	322,211,392
Weighted average shares used in computing net income (loss) per share of Common Stock – diluted (in shares)	988,638,662	322,211,392
Total comprehensive income (loss):
Net income (loss)	$ 6,487	$ (153,098)
Change in foreign currency translation adjustment	(555)	(564)
Total comprehensive income (loss)	$ 5,932	$ (153,662)