Condensed Consolidated Statements of Operations and Comprehensive Loss (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Revenue:
Revenues	$ 39,730	$ 6,401	$ 60,606	$ 8,582
Operating expenses:
Research and development	49,735	17,480	80,479	36,493
General and administrative	4,598	5,177	9,665	12,415
Total operating expenses	54,333	22,657	90,144	48,908
Operating loss	(14,603)	(16,256)	(29,538)	(40,326)
Other income (expense):
Interest income	310	416	747	919
Non-cash interest expense related to sale of future royalties	(672)	(610)	(1,669)	(1,414)
Other income (expense), net	(1)	5	(2)	4
Loss before income taxes	(14,966)	(16,445)	(30,462)	(40,817)
Provision for income taxes	20	21	115	66
Net loss	$ (14,986)	$ (16,466)	$ (30,577)	$ (40,883)
Net loss per share - basic and diluted (in dollars per share)	$ (0.07)	$ (0.09)	$ (0.13)	$ (0.23)
Shares used to compute net loss per share - basic and diluted (in shares)	228,367,812	184,703,003	228,145,724	176,757,049
Comprehensive loss:
Net loss	$ (14,986)	$ (16,466)	$ (30,577)	$ (40,883)
Unrealized loss on available-for-sale investments, net of tax	0	(6)	(11)	(15)
Comprehensive loss	(14,986)	(16,472)	(30,588)	(40,898)
Non Cash Royalty Revenue [Member]
Revenue:
Revenues	0	37	1,579	622
Government Contract [Member]
Revenue:
Revenues	$ 39,730	$ 6,364	$ 59,027	$ 7,960