Prepaid Expenses, Other Current Assets and Other Noncurrent Assets - Summary of Prepaid Expenses and Other Noncurrent Assets (Detail) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Prepaid Expense and Other Assets, Noncurrent [Abstract]
Prepaid external research and development - long term	$ 444	$ 116
Other	0	0
Total other noncurrent assets	$ 444	$ 116

Carrying amount as of the balance sheet date of amounts paid in advance which will be charged against earnings in periods after one year or beyond the operating cycle, if longer.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(17))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Name:	us-gaap_PrepaidExpenseOtherNoncurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant