Income Taxes - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2022
Income Taxes [Line Items]
Change in valuation allowance	$ 9,300	$ 15,000	$ 95,300
Unrecognized tax benefits related to federal and California R&D credits	45,959	$ 35,128	$ 23,300	$ 16,724
Federal Tax
Income Taxes [Line Items]
Net operating loss carryforwards	944,300
Research and development tax credit carryforwards	89,400
State Tax
Income Taxes [Line Items]
Net operating loss carryforwards	881,600
Research and development tax credit carryforwards	66,200
Foreign Tax Authority
Income Taxes [Line Items]
Net operating loss carryforwards	13,400
Foreign Tax Authority | Capital Loss Carryforward
Income Taxes [Line Items]
Net operating loss carryforwards	$ 74,300