Research and Development Agreements - Schedule of Research and Development Revenues Disaggregated by Location (Detail) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022
Revenue Recognition [Line Items]
Total revenue	$ 57,306	$ 19,754
Research and development revenue
Revenue Recognition [Line Items]
Total revenue	52,625	19,754
Research and development revenue \| UNITED STATES
Revenue Recognition [Line Items]
Total revenue	$ 52,625	17,168
Research and development revenue \| JAPAN
Revenue Recognition [Line Items]
Total revenue		$ 2,586

Amount of revenue from collaborative arrangement. Excludes revenue from contract with customer under Topic 606.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 808
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479402/808-10-50-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 3
-SubTopic 10
-Topic 808
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479428/808-10-45-3

Name:	us-gaap_RevenueFromCollaborativeArrangementExcludingRevenueFromContractWithCustomer
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration