Balance Sheet Details - Accrued Liabilities (Detail) - USD ($) $ in Thousands		Dec. 31, 2023	Jun. 30, 2023
Accrued Liabilities [Line Items]
Accrued pre-clinical and clinical trial expenses		$ 810	$ 3,663
Accrued compensation and benefits	[1]	2,236	7,189
Accrued legal and professional services		1,541	1,423
Accrued reimbursement to KKC		892	0
Other		166	186
Total accrued liabilities		$ 5,645	$ 12,461

[1] (1) Includes $0.2 million and $1.0 million of one-time termination employee benefits as of December 31, 2023 and June 30, 2023, respectively, as more fully described in Note 5. One-time Employee Termination Benefits.