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Balance Sheet Components - Property, plant, and equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Property, Plant and Equipment [Line Items]
Property, plant, and equipment excluding equipment and construction In progress, gross	$ 465,219	$ 357,988
Land Use Rights, Gross	8,760	9,089
Less accumulated depreciation	(252,982)	(225,184)
Property, plant and equipment excluding equipment and construction in progress, net	212,237	132,804
Equipment and construction in progress	197,500	198,852
Property, plant and equipment, net	409,737	331,656
Depreciation expense	31,900	29,200	$ 27,200
Capitalized software development costs	800	300	200
Capitalized Computer Software, Amortization	500	600	$ 600
Unamortized capitalized software development costs	900	700
Land [Member]
Property, Plant and Equipment [Line Items]
Property, plant, and equipment excluding equipment and construction In progress, gross	4,877	4,877
Building [Member]
Property, Plant and Equipment [Line Items]
Property, plant, and equipment excluding equipment and construction In progress, gross	36,205	4,325
Manufacturing machinery and equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant, and equipment excluding equipment and construction In progress, gross	303,750	265,192
Equipment and tooling [Member]
Property, Plant and Equipment [Line Items]
Property, plant, and equipment excluding equipment and construction In progress, gross	20,739	16,605
Computer equipment and software [Member]
Property, Plant and Equipment [Line Items]
Property, plant, and equipment excluding equipment and construction In progress, gross	34,048	25,686
Office furniture and equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant, and equipment excluding equipment and construction In progress, gross	3,243	2,314
Leasehold improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant, and equipment excluding equipment and construction In progress, gross	53,597	29,900
Computer software
Property, Plant and Equipment [Line Items]
Gross amount of computer software recorded under capital lease	13,700	8,200
Accumulated depreciation on computer software recorded under capital lease	$ 8,200	$ 7,300

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Property, Plant and Equipment Excluding Equipment and Construction In Progress, Net

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Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated depreciation of leased physical assets used in the normal conduct of business to produce goods and services.

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Additions made to capitalized computer software costs during the period.

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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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