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DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Fair Value in the Condensed Consolidated Balance Sheets (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Foreign currency forward contracts
Derivatives, Fair Value [Line Items]
Notional amount of forward contracts held to sell U.S. dollars in exchange for Canadian dollars	$ 62,300	$ 62,000
Accounts payable and accrued liabilities \| Cash Flow Hedging \| Designated As Hedging Instrument \| Foreign currency forward contracts
Derivatives, Fair Value [Line Items]
Fair Value Liability	$ (185)
Prepaid expenses and other current assets \| Cash Flow Hedging \| Designated As Hedging Instrument \| Foreign currency forward contracts
Derivatives, Fair Value [Line Items]
Fair Value Asset		$ 736
Minimum
Derivatives, Fair Value [Line Items]
Contract maturity	1 month
Maximum
Derivatives, Fair Value [Line Items]
Contract maturity	12 months