UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Income Statement [Abstract]
Revenues	$ 4,944	$ 1,515	$ 7,776	$ 2,004
Revenue from Contract with Customer, Product and Service [Extensible Enumeration]			Product and Service, Other [Member]	Product and Service, Other [Member]
Research and development services	4,578	1,384	$ 7,200	$ 1,861
Cost of revenues	4,578	1,384	7,200	1,861
Gross profit	366	131	576	143
Operating expenses
Research and development	9,495	10,137	17,165	22,367
Selling, general and administrative	6,427	5,963	12,608	12,044
Exit and termination (benefits) costs	(258)	(346)	(672)	1,077
Total operating expenses	15,664	15,754	29,101	35,488
Loss from operations	(15,298)	(15,623)	(28,525)	(35,345)
Interest income	1,370	2,209	2,860	4,677
Net loss	$ (13,928)	$ (13,414)	$ (25,665)	$ (30,668)
Net loss per share, basic (in USD per share)	$ (0.08)	$ (0.08)	$ (0.14)	$ (0.18)
Net loss per share, diluted (in USD per share)	$ (0.08)	$ (0.08)	$ (0.14)	$ (0.18)
Weighted-average shares outstanding, basic (in shares)	178,441,616	175,308,965	178,057,282	174,829,257
Weighted-average shares outstanding, diluted (in shares)	178,441,616	175,308,965	178,057,282	174,829,257