LEASES - Property and Equipment Costs (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Jun. 30, 2019
Property, Plant and Equipment [Line Items]
Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, before Accumulated Depreciation and Amortization	$ 44,584	$ 47,890
Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, Accumulated Depreciation and Amortization	36,712	38,300
Property and equipment used for rental program
Property, Plant and Equipment [Line Items]
Cost	32,445
Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, before Accumulated Depreciation and Amortization	32,445	36,190
Accumulated depreciation	27,745
Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, Accumulated Depreciation and Amortization	27,745	30,473
Net	$ 4,700	$ 5,717