Segment Information - Schedule of Information about Company's Segment Revenues, Significant Segment Expenses Regularly Provided to CODM, Other Segment Items and Consolidated Net Income (loss) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Segment Reporting Information [Line Items]
Revenues	$ 89,012	$ 15,622
Less:
Cost of license and royalty revenues	3,436	4,283
Total research and development expense	53,087	54,844
Total general and administrative expense	20,347	18,291
Other segment items	(6,059)	(1,534)
Net income (loss)	6,083	(63,330)
Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenues	89,012	15,622
Less:
Cost of license and royalty revenues	3,436	4,283
Total research and development expense	53,087	54,844
Total general and administrative expense	20,347	18,291
Operating Segments [Member] | Personnel
Less:
Total research and development expense	18,643	17,060
Total general and administrative expense	5,964	5,318
Operating Segments [Member] | Direct development and support
Less:
Total research and development expense	24,017	26,033
Operating Segments [Member] | Other general and administrative
Less:
Total general and administrative expense	8,220	6,992
Operating Segments [Member] | Facilities
Less:
Total research and development expense	2,768	2,917
Total general and administrative expense	1,330	1,033
Operating Segments [Member] | Stock-based compensation
Less:
Total research and development expense	3,947	4,893
Total general and administrative expense	4,590	4,709
Operating Segments [Member] | Depreciation and amortization
Less:
Total research and development expense	3,712	3,941
Total general and administrative expense	$ 243	$ 239