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DEBT AND OTHER FINANCING ARRANGEMENTS - Other Long-Term Borrowings (Details) - USD ($) $ in Millions	9 Months Ended
	Mar. 31, 2019	Jun. 30, 2018	Nov. 09, 2017
Debt Instrument [Line Items]
Capital lease obligations	$ 0.2	$ 0.4
Minimum
Debt Instrument [Line Items]
Capital Lease Obligations, Interest Rate	5.60%
Capital lease obligations term	2 years
Maximum
Debt Instrument [Line Items]
Capital Lease Obligations, Interest Rate	9.00%
Capital lease obligations term	5 years
Cantaloupe
Debt Instrument [Line Items]
Long-term debt	$ 0.9	1.4	$ 1.8
Cantaloupe \| Notes Five Percent Due April 2020
Debt Instrument [Line Items]
Long-term debt	$ 0.3	0.4
Interest rate	5.00%
Cantaloupe \| Notes Ten Percent Due September 2021
Debt Instrument [Line Items]
Long-term debt	$ 0.5	0.7
Interest rate	10.00%
Cantaloupe \| Notes Twelve Percent Due December 2019
Debt Instrument [Line Items]
Long-term debt	$ 0.2	$ 0.3
Interest rate	12.00%