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CONTRACT ASSETS AND LIABILITIES (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Contract Assets
Unbilled revenue	$ 40,853	$ 43,011
Change in unbilled revenue	$ (2,158)
Percentage of change in unbilled revenue	(5.00%)
Contract Liabilities
Advances from customers	$ 38,463	28,155
Deferred revenue - current	32,689	32,863
Deferred revenue - long-term	14,898	$ 13,214
Change in advances from customers	$ 10,308
Percentage of change in advances from customers	37.00%
Change in deferred revenue - current	$ (174)
Percentage of change in deferred revenue - current	(1.00%)
Change in deferred revenue - long-term	$ 1,684
Percentage of change in deferred revenue - long-term	13.00%
Remaining Performance Obligations
Revenue remaining performance obligation	$ 251,500
Remaining performance obligation expected percentage recognized	57.00%
Recognized revenue from contract liabilities	$ 58,600
Revenue, Practical Expedient, Financing Component [true false]	true
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-01-01
Remaining Performance Obligations
Remaining performance obligation expected timing of satisfaction period	12 months

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