Stock Option Plans - Summary of Activity Related to RSUs (Detail) - Restricted Stock Units (RSUs) [Member]	12 Months Ended
Dec. 31, 2024 shares
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Nonvested, Number of Shares [Roll Forward]
Restricted stock units assumed from Kintara upon merger closing	114
Vesting of restricted stock units	0
Ending balance	114

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

No definition available.

Name:	us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfSharesRollForward
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration