INCOME TAXES - Components of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Jun. 30, 2024
Deferred tax assets:
Net operating loss carryforwards	$ 850	$ 3,419
Research credits	10,064	10,346
Other credits	3	15
Deferred revenue	770	853
Stock-based compensation	4,054	4,927
Accruals and reserves	1,178	1,231
Lease liability	286	443
Intangibles	3	4
Other	85	178
Section 267 payables	2,335	1,526
Capitalized research and development	14,453	14,109
Gross deferred tax assets	34,081	37,051
Less valuation allowance	(5,529)	(35,608)
Net deferred tax assets	28,552	1,443
Gross deferred tax liabilities
Right-of-use asset	(297)	(464)
Fixed assets	(28)	(5)
Gross deferred tax liabilities	(325)	(469)
Total deferred tax assets, net	28,226	973
Other Assets
Gross deferred tax liabilities
Total deferred tax assets, net	$ 28,227	$ 974