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LEASES - Property and Equipment Costs (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Jun. 30, 2019
Property, Plant and Equipment [Line Items]    
Net $ 8,961 $ 9,590
Assets Leased to Others    
Property, Plant and Equipment [Line Items]    
Cost 32,507  
Accumulated depreciation (27,052)  
Net $ 5,455  
Cost   36,190
Accumulated depreciation   (30,473)
Net   $ 5,717