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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 |  |  |  |  |

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