ACCOUNTING POLICIES - Leases (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2019
Lessor, Lease, Description [Line Items]
Operating lease right-of-use asset impairment	$ 1,578	$ 0	$ 0
Lessor, sales-type lease term	60 months
Lessor, operating lease term	36 months
Minimum
Lessor, Lease, Description [Line Items]
Lease term	1 year
Cancellation period	30 days
Maximum
Lessor, Lease, Description [Line Items]
Lease term	8 years
Cancellation period	60 days