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BALANCE SHEET DETAILS (Details) - USD ($) $ in Thousands	12 Months Ended
BALANCE SHEET DETAILS (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2019
Accounts receivable, net
Accounts receivable	$ 315,926	$ 287,488
Less allowance for doubtful accounts	(25,273)	(17,648)
Total	290,653	269,840
Inventories
Raw materials	160,313	132,797
Work-in-process	59,594	50,023
Finished goods	74,301	58,406
Total	294,208	241,226
Property and equipment, net
Property and equipment, gross	273,348	266,219
Less accumulated depreciation and amortization	(155,344)	(138,283)
Property and equipment, net	118,004	127,936
Depreciation	22,400	21,500	$ 20,500
Land
Property and equipment, net
Property and equipment, gross	16,357	16,516
Buildings, civil works and improvements
Property and equipment, net
Property and equipment, gross	$ 57,555	57,709
Buildings, civil works and improvements \| Minimum
Property and equipment, net
Estimated Useful Lives	5 years
Buildings, civil works and improvements \| Maximum
Property and equipment, net
Estimated Useful Lives	40 years
Leasehold improvements
Property and equipment, net
Property and equipment, gross	$ 8,874	9,052
Leasehold improvements \| Minimum
Property and equipment, net
Estimated Useful Lives	1 year
Leasehold improvements \| Maximum
Property and equipment, net
Estimated Useful Lives	13 years
Equipment and tooling
Property and equipment, net
Property and equipment, gross	$ 129,735	128,657
Equipment and tooling \| Minimum
Property and equipment, net
Estimated Useful Lives	3 years
Equipment and tooling \| Maximum
Property and equipment, net
Estimated Useful Lives	10 years
Furniture and fixtures
Property and equipment, net
Property and equipment, gross	$ 3,275	3,166
Furniture and fixtures \| Minimum
Property and equipment, net
Estimated Useful Lives	3 years
Furniture and fixtures \| Maximum
Property and equipment, net
Estimated Useful Lives	10 years
Computer equipment
Property and equipment, net
Property and equipment, gross	$ 17,487	19,349
Computer equipment \| Minimum
Property and equipment, net
Estimated Useful Lives	3 years
Computer equipment \| Maximum
Property and equipment, net
Estimated Useful Lives	5 years
Computer software
Property and equipment, net
Property and equipment, gross	$ 23,090	18,217
Computer software \| Minimum
Property and equipment, net
Estimated Useful Lives	3 years
Computer software \| Maximum
Property and equipment, net
Estimated Useful Lives	10 years
Computer software implementation in process
Property and equipment, net
Property and equipment, gross	$ 11,102	11,817
Construction in process
Property and equipment, net
Property and equipment, gross	$ 4,011	$ 3,598