Fair Value Measurements - Schedule of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Dec. 31, 2025
Financial assets:
Marketable securities	$ 215,893	$ 236,805
Total financial assets	215,893	236,805
Financial liabilities:
SPA put/call		11,411
Success payment liabilities	490	1,242
Total financial liabilities	490	12,653
U.S. Treasury securities
Financial assets:
Marketable securities	134,539	176,072
U.S. government agency securities
Financial assets:
Marketable securities	11,685	6,533
Corporate debt securities
Financial assets:
Marketable securities	18,012	4,434
Money market funds
Financial assets:
Money market funds	51,657	49,766
Level 1
Financial assets:
Total financial assets	51,657	49,766
Financial liabilities:
SPA put/call		0
Success payment liabilities	0	0
Total financial liabilities	0	0
Level 1 | U.S. Treasury securities
Financial assets:
Marketable securities	0	0
Level 1 | U.S. government agency securities
Financial assets:
Marketable securities	0	0
Level 1 | Corporate debt securities
Financial assets:
Marketable securities	0	0
Level 1 | Money market funds
Financial assets:
Money market funds	51,657	49,766
Level 2
Financial assets:
Total financial assets	164,236	187,039
Financial liabilities:
SPA put/call		0
Success payment liabilities	0	0
Total financial liabilities	0	0
Level 2 | U.S. Treasury securities
Financial assets:
Marketable securities	134,539	176,072
Level 2 | U.S. government agency securities
Financial assets:
Marketable securities	11,685	6,533
Level 2 | Corporate debt securities
Financial assets:
Marketable securities	18,012	4,434
Level 2 | Money market funds
Financial assets:
Money market funds	0	0
Level 3
Financial assets:
Total financial assets	0	0
Financial liabilities:
SPA put/call		11,411
Success payment liabilities	490	1,242
Total financial liabilities	490	12,653
Level 3 | U.S. Treasury securities
Financial assets:
Marketable securities	0	0
Level 3 | U.S. government agency securities
Financial assets:
Marketable securities	0	0
Level 3 | Corporate debt securities
Financial assets:
Marketable securities	0	0
Level 3 | Money market funds
Financial assets:
Money market funds	$ 0	$ 0