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ACQUISITION - Narrative (Details) - USD ($)		12 Months Ended
ACQUISITION - Narrative (Details) - USD ($)	Nov. 09, 2017	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Business Acquisition [Line Items]
Principal amount	$ 35,000,000.0
Weighted average useful life		11 years 9 months 18 days
Goodwill		$ 63,945,000	$ 63,945,000
Cantaloupe
Business Acquisition [Line Items]
Total consideration	88,207,000
Intangible assets	$ 30,800,000
Weighted average useful life	13 years
Goodwill	$ 52,454,000
Pro forma, revenue of aquiree since acquisition date				$ 19,200,000
Net earnings				200,000
2018 JPMorgan Term Loan
Business Acquisition [Line Items]
Principal amount	25,000,000.0
Revolving Credit Facility
Business Acquisition [Line Items]
Principal amount	10,000,000.0
Adjustment To Unaudited Proforma Earnings \| Cantaloupe
Business Acquisition [Line Items]
Acquisition related costs				$ 7,100,000	$ 7,100,000
Customer relationships
Business Acquisition [Line Items]
Weighted average useful life		15 years 3 months 18 days
Customer relationships \| Cantaloupe
Business Acquisition [Line Items]
Intangible assets	18,900,000
Developed Technology Rights \| Cantaloupe
Business Acquisition [Line Items]
Intangible assets	10,300,000
Trade Names \| Cantaloupe
Business Acquisition [Line Items]
Intangible assets	$ 1,600,000
Minimum \| Cantaloupe
Business Acquisition [Line Items]
Useful life	6 years
Minimum \| Customer relationships
Business Acquisition [Line Items]
Useful life		10 years	10 years
Maximum \| Cantaloupe
Business Acquisition [Line Items]
Useful life	18 years
Maximum \| Customer relationships
Business Acquisition [Line Items]
Useful life		18 years	18 years