Development, Commercialization and Supply Agreement - Changes in Balances of Contract Assets and Liabilities (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Contract liabilities:
Deferred revenue, Balance at Beginning of Period		$ 0	$ 4,850
Deferred revenue, Additions		0	0
Deferred revenue, Deductions		0	(4,850)
Deferred revenue, Deductions	$ (4,900)
Deferred revenue, Balance at End of Period	$ 0	$ 0	$ 0