Operating Segment, Geographic Information and Significant Customers - Geographic Distribution of Revenues and Long Lived Assets from Continuing Operations (Details) $ in Thousands	3 Months Ended
	Oct. 01, 2021 USD ($) segment	Oct. 02, 2020 USD ($)	Jul. 02, 2021 USD ($)
Segment Reporting [Abstract]
Number of operating segments | segment	1
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	$ 225,013	$ 205,621
Identifiable long-lived assets	128,694		$ 128,524
Components
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	35,065	50,296
Modules and Sub-assemblies
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	59,030	17,466
Integrated Subsystems
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	130,918	137,859
Total Sensor & Effector
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	124,287	132,392
Radar
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	58,904	72,409
Electronic Warfare
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	33,941	36,888
Other Sensor & Effector
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	31,442	23,095
C4I
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	83,401	53,781
Other End Applications
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	17,325	19,448
Domestic
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	189,248	178,743
International/Foreign Military Sales
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	35,765	26,878
US
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	213,741	195,847
Europe
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	11,187	9,663
Asia Pacific
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	85	111
Reportable Geographical Components | US
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	215,300	196,087
Identifiable long-lived assets	123,581		123,009
Reportable Geographical Components | Europe
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	11,916	10,007
Identifiable long-lived assets	5,108		5,509
Reportable Geographical Components | Asia Pacific
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	85	111
Identifiable long-lived assets	5		6
Geography Eliminations
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	(2,288)	(584)
Identifiable long-lived assets	0		$ 0
Geography Eliminations | US
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	1,559	240
Geography Eliminations | Europe
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	729	344
Geography Eliminations | Asia Pacific
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenues	$ 0	$ 0