Balance Sheet Components - Property, plant, and equipment (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Jun. 30, 2015
Property, Plant and Equipment [Line Items]
Property, plant, and equipment excluding equipment and construction In progress, gross	$ 262,140	$ 242,780
Less: Accumulated depreciation	(162,352)	(141,883)
Property, plant and equipment excluding equipment and construction in progress, net	99,788	100,897
Equipment and construction in progress	12,709	18,682
Property, plant and equipment, net	112,497	119,579
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	4,243	4,243
Manufacturing machinery and equipment
Property, Plant and Equipment [Line Items]
Property, plant, and equipment excluding equipment and construction In progress, gross	189,563	172,467
Equipment and tooling
Property, Plant and Equipment [Line Items]
Property, plant, and equipment excluding equipment and construction In progress, gross	12,316	11,261
Computer equipment and software
Property, Plant and Equipment [Line Items]
Property, plant, and equipment excluding equipment and construction In progress, gross	20,958	20,602
Office furniture and equipment
Property, Plant and Equipment [Line Items]
Property, plant, and equipment excluding equipment and construction In progress, gross	1,813	1,762
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property, plant, and equipment excluding equipment and construction In progress, gross	$ 28,370	$ 27,568