Operating Segment, Geographic Information and Significant Customers - Net Revenue by Product Grouping (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Revenue from External Customer [Line Items]
Net revenues	$ 176,963	$ 174,636	$ 159,089	$ 144,056	$ 152,867	$ 116,336	$ 117,912	$ 106,069	$ 654,744	$ 493,184	$ 408,588
Components
Revenue from External Customer [Line Items]
Net revenues									184,870	142,982	105,669
Modules and Sub-assemblies
Revenue from External Customer [Line Items]
Net revenues									180,873	194,377	161,973
Integrated Subsystems
Revenue from External Customer [Line Items]
Net revenues									$ 289,001	$ 155,825	$ 140,946