Acquisitions - Narrative (Details) - USD ($) $ in Thousands					3 Months Ended	9 Months Ended
	Dec. 30, 2020	Dec. 07, 2020	Sep. 23, 2020	Sep. 23, 2019	Apr. 02, 2021	Apr. 02, 2021	Jul. 03, 2020
Business Acquisition [Line Items]
Goodwill					$ 782,656	$ 782,656	$ 614,076
Physical Optics Corporation
Business Acquisition [Line Items]
Total consideration		$ 310,000
Goodwill	$ 168,234
Restricted cash					61,626	61,626
Business Acquisition, Pro Forma Revenue					38,492	38,709
Business Acquisition, Pro Forma Net Income (Loss), Before Tax					$ 1,065	$ 782
Physical Optics Corporation | Customer Relationships
Business Acquisition [Line Items]
Finite-lived intangible assets acquired	$ 81,000
Useful life of acquired assets	11 years
Physical Optics Corporation | Developed Technology
Business Acquisition [Line Items]
Finite-lived intangible assets acquired	$ 25,000
Useful life of acquired assets	9 years
Physical Optics Corporation | Backlog
Business Acquisition [Line Items]
Finite-lived intangible assets acquired	$ 8,000
Useful life of acquired assets	1 year
American Panel Corporation
Business Acquisition [Line Items]
Goodwill				$ 53,022
Payments to acquire business				$ 100,000
Acquired goodwill, amortization period				15 years
Tax deductible goodwill				$ 48,840
American Panel Corporation | Customer Relationships
Business Acquisition [Line Items]
Finite-lived intangible assets acquired			$ 20,600
Useful life of acquired assets			11 years
American Panel Corporation | Developed Technology
Business Acquisition [Line Items]
Finite-lived intangible assets acquired			$ 10,400
Useful life of acquired assets			11 years
American Panel Corporation | Backlog
Business Acquisition [Line Items]
Finite-lived intangible assets acquired			$ 2,200
Useful life of acquired assets			2 years