Related Party Transactions (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025	Mar. 31, 2025	Sep. 30, 2026	Sep. 30, 2025
Related Party Transaction [Line Items]
Research and development expense	$ 49,810	$ 47,928		$ 177,167	$ 159,271
Management
Related Party Transaction [Line Items]
Research and development expense			$ 10,000
Maximum additional milestone payments	$ 117,000			$ 117,000