Balance Sheet Components - Property, plant, and equipment (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Jun. 30, 2020
Property, Plant and Equipment [Line Items]
Property, plant, and equipment excluding equipment and construction In progress, gross	$ 692,210	$ 655,263
Land use rights	8,828	8,502
Less: accumulated depreciation	(306,956)	(291,515)
Property, plant and equipment excluding equipment and construction in progress, net	385,254	363,748
Equipment and construction in progress	36,388	48,592
Property, plant and equipment, net	421,642	412,340
Land
Property, Plant and Equipment [Line Items]
Property, plant, and equipment excluding equipment and construction In progress, gross	4,877	4,877
Building
Property, Plant and Equipment [Line Items]
Property, plant, and equipment excluding equipment and construction In progress, gross	61,008	58,875
Manufacturing machinery and equipment
Property, Plant and Equipment [Line Items]
Property, plant, and equipment excluding equipment and construction In progress, gross	477,461	447,079
Equipment and tooling
Property, Plant and Equipment [Line Items]
Property, plant, and equipment excluding equipment and construction In progress, gross	25,931	25,398
Computer equipment and software
Property, Plant and Equipment [Line Items]
Property, plant, and equipment excluding equipment and construction In progress, gross	39,212	38,779
Office furniture and equipment
Property, Plant and Equipment [Line Items]
Property, plant, and equipment excluding equipment and construction In progress, gross	3,595	3,529
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property, plant, and equipment excluding equipment and construction In progress, gross	$ 71,298	$ 68,224