Acquisitions - Narrative (Details) $ in Millions			3 Months Ended		9 Months Ended
	May 23, 2022 USD ($)	Dec. 27, 2021 USD ($)	Oct. 01, 2023 USD ($)	Sep. 25, 2022 USD ($)	Oct. 01, 2023 USD ($)	Sep. 25, 2022 USD ($)
Fair Value, Inputs, Level 3 | Valuation, Income Approach | Measurement Input, Discount Rate
Business Acquisition [Line Items]
Discount rate	0.064	0.11
Fair Value, Inputs, Level 3 | Valuation, Income Approach | Measurement Input, Royalty Rate
Business Acquisition [Line Items]
Discount rate		0.11
Fair Value, Inputs, Level 3 | Valuation, Income Approach | Measurement Input, Royalty Rate | Minimum
Business Acquisition [Line Items]
Discount rate	0.11
Fair Value, Inputs, Level 3 | Valuation, Income Approach | Measurement Input, Royalty Rate | Maximum
Business Acquisition [Line Items]
Discount rate	0.12
Cosmic Advanced Engineering Solutions, Inc.
Business Acquisition [Line Items]
Payments to acquire business, subject to adjustments		$ 37.9
Payments to acquire businesses, amount not included holdback paid at later		0.4
Current liabilities		6.7
Deferred tax liabilities		2.4
Aggregate purchase price		37.9
Cash paid		39.4
Cosmic Advanced Engineering Solutions, Inc. | Trade names
Business Acquisition [Line Items]
Intangible assets acquired		$ 0.6
Useful life		5 years
Cosmic Advanced Engineering Solutions, Inc. | Contracts and backlog
Business Acquisition [Line Items]
Intangible assets acquired		$ 1.7
Useful life		1 year
Cosmic Advanced Engineering Solutions, Inc. | Customer relationships
Business Acquisition [Line Items]
Intangible assets acquired		$ 4.4
Useful life		10 years
Cosmic Advanced Engineering Solutions, Inc. | Developed technology
Business Acquisition [Line Items]
Intangible assets acquired		$ 1.8
Useful life		5 years
Southern Research Engineering Division
Business Acquisition [Line Items]
Current liabilities	$ 2.5
Aggregate purchase price	79.4
Cash paid	74.4
Common stock issued	5.0
Deferred tax assets, net	0.2
Revenue			$ 13.0	$ 12.5	$ 38.1	$ 16.6
Operating income			$ 1.4	$ 0.2	$ 2.8	$ 0.7
Southern Research Engineering Division | Trade names
Business Acquisition [Line Items]
Intangible assets acquired	$ 0.5
Useful life	5 years
Southern Research Engineering Division | Contracts and backlog
Business Acquisition [Line Items]
Intangible assets acquired	$ 2.5
Useful life	3 years
Southern Research Engineering Division | In-process research and development
Business Acquisition [Line Items]
Intangible assets acquired	$ 7.3
Southern Research Engineering Division | Developed technology
Business Acquisition [Line Items]
Intangible assets acquired	$ 0.5
Useful life	3 years