Income Taxes - Deferred Tax Liabilities and Assets (Detail) - USD ($) $ in Thousands	Jun. 30, 2024	Jun. 30, 2023
Components of Deferred Tax Assets [Abstract]
Deferred revenue	$ 0	$ 14,068
Fixed and intangible assets	8,058	10,681
Capitalization of R&D costs	11,456	10,320
Share-based payments	4,081	5,149
Tax losses carried forward	45,721	34,514
Right-of-use assets	(45)	(2,597)
Lease liabilities		2,761
Other	647	1,303
Total deferred tax assets	69,918	76,199
Valuation allowance for deferred tax assets	(69,918)	(76,199)
Net deferred tax assets and liabilities	$ 0	$ 0