LEASES - Operating lease expense (Details) - Ancillary Office Space - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Lessee, Lease, Description [Line Items]
Operating lease expense	$ 392	$ 379
Research and development
Lessee, Lease, Description [Line Items]
Operating lease expense	289	268
General and administrative
Lessee, Lease, Description [Line Items]
Operating lease expense	$ 103	$ 111