OPERATING LEASES - Operating lease expense (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Lessee, Lease, Description [Line Items]
Operating lease expense	$ 173	$ 100
Research and development
Lessee, Lease, Description [Line Items]
Operating lease expense	131	77
General and administrative
Lessee, Lease, Description [Line Items]
Operating lease expense	$ 42	$ 23