LEASES - Property and Equipment Costs (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Jun. 30, 2021
Leases [Abstract]
Cost	$ 26,664	$ 26,753
Accumulated depreciation	(24,626)	(24,487)
Net	$ 2,038	$ 2,266

Amount of accumulated depreciation of lessor's underlying asset for which right to use has been conveyed to lessee under operating lease.

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Name:	us-gaap_PropertySubjectToOrAvailableForOperatingLeaseAccumulatedDepreciation
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant