CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Operating expenses:
Research and development	$ 19,081	$ 14,110	$ 56,745	$ 42,044
Selling, general and administrative	8,133	6,044	25,578	20,457
Gain (Loss) on Disposition of Assets	0	0	0	(509)
Total operating expenses	27,214	20,154	82,323	61,992
Loss from operations	(27,214)	(20,154)	(82,323)	(61,992)
Other income (expense), net:
Interest income	1,388	14	3,137	21
Interest expense	(1,634)	(1,018)	(3,891)	(2,849)
Other income (expense), net	17	(441)	342	(440)
Total other income (expense), net	24,935	(1,445)	331	(2,757)
Loss before provision for income taxes	(2,279)	(21,599)	(81,992)	(64,749)
Provision for income taxes	26	(13)	45	14
Net loss and comprehensive loss	(2,305)	(21,586)	(82,037)	(64,763)
Deemed dividend on Class B Warrant price reset	0	(287)	0	(2,546)
Net loss attributable to common stockholders	$ (2,305)	$ (21,873)	$ (82,037)	$ (67,309)
Net loss per share attributable to common stockholders—basic	$ (0.01)	$ (0.26)	$ (0.48)	$ (1.32)
Net loss per share attributable to common stockholders—diluted	$ (0.01)	$ (0.26)	$ (0.48)	$ (1.32)
Weighted average shares of common stock outstanding—diluted	196,988,000	83,211,000	170,751,000	50,976,000
Weighted average shares of common stock outstanding—basic	196,988,000	83,211,000	170,751,000	50,976,000
Embedded derivative liability
Other income (expense), net:
Derivative, gain (loss) on derivative, net	$ 0	$ 0	$ 0	$ 511
Warrant Liability
Other income (expense), net:
Derivative, gain (loss) on derivative, net	$ 25,164	$ 0	$ 743	$ 0