Acquisitions - Narrative (Details) - USD ($) $ in Thousands	Dec. 30, 2020	Dec. 07, 2020	Sep. 23, 2019	Jan. 01, 2021	Jul. 03, 2020
Business Acquisition [Line Items]
Goodwill				$ 783,302	$ 614,076
Restricted cash				61,626	$ 0
Physical Optics Corporation
Business Acquisition [Line Items]
Total consideration		$ 310,000
Goodwill	$ 168,880
Restricted cash				$ 61,626
Physical Optics Corporation | Customer Relationships
Business Acquisition [Line Items]
Finite-lived intangible assets acquired	$ 69,327
Useful life of acquired assets	11 years
Physical Optics Corporation | Developed Technology
Business Acquisition [Line Items]
Finite-lived intangible assets acquired	$ 40,055
Useful life of acquired assets	10 years
Physical Optics Corporation | Backlog
Business Acquisition [Line Items]
Finite-lived intangible assets acquired	$ 8,088
Useful life of acquired assets	2 years
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			$ 49,744
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