Operating Segment, Geographic Information and Significant Customers - Net Revenue by End Market (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
Revenues from External Customers and Long-Lived Assets [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
Domestic
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues									704,722	580,935	410,050
International/Foreign Military Sales
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues									$ 91,888	$ 73,809	$ 83,134