Operating Segment, Geographic Information and Significant Customers - Net Revenue by Product Grouping (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Jul. 03, 2020	Mar. 27, 2020	Dec. 27, 2019	Sep. 27, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jul. 03, 2020	Jun. 30, 2019	Jun. 30, 2018
Revenue from External Customer [Line Items]
Net revenues	$ 217,377	$ 208,016	$ 193,913	$ 177,304	$ 176,963	$ 174,636	$ 159,089	$ 144,056	$ 796,610	$ 654,744	$ 493,184
Components
Revenue from External Customer [Line Items]
Net revenues									225,292	184,870	142,982
Modules and Sub-assemblies
Revenue from External Customer [Line Items]
Net revenues									203,432	180,873	194,377
Integrated Subsystems
Revenue from External Customer [Line Items]
Net revenues									$ 367,886	$ 289,001	$ 155,825