DERIVATIVES AND HEDGING ACTIVITIES - Pre-Tax Effect of Derivative Financial Instruments (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2019
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Net income (loss)	$ 77,364	$ (80,407)	$ (183,314)
Reclassification out of Accumulated Other Comprehensive Income | Deferred gains/(losses) on cash flow hedging instruments
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Net income (loss)	(1,773)	784	$ (30)
Interest Rate Swap | Cost of sales | Reclassification out of Accumulated Other Comprehensive Income | Deferred gains/(losses) on cash flow hedging instruments
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Net income (loss)	0	0
Interest Rate Swap | Interest and other financing expense, net | Reclassification out of Accumulated Other Comprehensive Income | Deferred gains/(losses) on cash flow hedging instruments
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Net income (loss)	(308)	40
Interest Rate Swap | Interest and other financing expense, net / Other expense (income), net | Reclassification out of Accumulated Other Comprehensive Income | Deferred gains/(losses) on cash flow hedging instruments
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Net income (loss)	0	0
Cross-currency swap | Interest and other financing expense, net | Reclassification out of Accumulated Other Comprehensive Income | Deferred gains/(losses) on cash flow hedging instruments
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Net income (loss)	158	32
Cross-currency swap | Interest and other financing expense, net / Other expense (income), net | Reclassification out of Accumulated Other Comprehensive Income | Deferred gains/(losses) on cash flow hedging instruments
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Net income (loss)	(1,556)	(959)
Foreign currency forward contracts | Cost of sales | Reclassification out of Accumulated Other Comprehensive Income | Deferred gains/(losses) on cash flow hedging instruments
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Net income (loss)	$ (67)	$ 103