Cash includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the customer may deposit additional funds at any time and effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid Investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Short-term investments, exclusive of cash equivalents, generally consist of marketable securities intended to be sold within one year (or the normal operating cycle if longer) and may include trading securities, available-for-sale securities, or held-to-maturity securities (if maturing within one year), as applicable.

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(9))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

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

Description of Business and Basis of Presentation - Additional Information (Detail) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended
	Dec. 31, 2024	Mar. 31, 2025	Mar. 31, 2024
Net loss		$ 29,281	$ 14,654
Cash flow used in operations		(26,540)	$ (10,411)
Accumulated deficit	$ (269,158)	(298,439)
Cash, cash equivalents and marketable securities		$ 157,500
Common Stock [Member]
Issuance of common stock			19,736,842
Buccal Cells [Member] \| Beginning of Study [Member]
Percentage of increasing from mean level	15.00%
Buccal Cells [Member] \| End of Study [Member]
Percentage of increasing from mean level	30.00%
Skin Cells [Member] \| Beginning of Study [Member]
Percentage of increasing from mean level	16.00%
Skin Cells [Member] \| End of Study [Member]
Percentage of increasing from mean level	72.00%