INCOME TAXES - Deferred Income Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Jun. 30, 2024
Deferred income tax assets:
Net operating loss carryforwards	$ 51,049	$ 38,942
Research and experimental costs	25,074	19,213
Intangible assets	7,285	6,487
Share-based compensation	5,650	4,280
Operating lease liabilities	452	624
Accrued expenses and other	802	763
Total deferred income tax assets	90,312	70,309
Valuation allowance for deferred income tax assets	(89,935)	(69,783)
Deferred income tax assets, net of valuation allowance	377	526
Deferred tax liabilities
Deferred income tax liability right-of-use assets	(377)	(526)
Net deferred income tax assets	$ 0	$ 0