ACCOUNTING POLICIES - Concentration of Risks And Revenue Recognition (Details) - customer	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Concentration Risk [Line Items]
Term of non cancelable lease with agreement	5 years
Revenue from Rights Concentration Risk
Concentration Risk [Line Items]
Number of customers	1	1	1
Revenue from Rights Concentration Risk | Customer One [Member]
Concentration Risk [Line Items]
Concentration percentage	20.00%	16.00%	21.00%
Equipment Sales Revenue
Concentration Risk [Line Items]
Number of customers	1	1	1
Equipment Sales Revenue | Customer One [Member]
Concentration Risk [Line Items]
Concentration percentage	37.00%	28.00%	17.00%
Accounts And Finance Receivables
Concentration Risk [Line Items]
Number of customers	1	1	1
Accounts And Finance Receivables | Customer One [Member]
Concentration Risk [Line Items]
Concentration percentage	42.00%	18.00%	35.00%