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Acquisitions - Narrative (Details) - USD ($) $ in Millions |  |  | 6 Months Ended
--- | --- | --- | ---
May 31, 2019 | Oct. 30, 2018 | Dec. 28, 2019
Business Acquisition [Line Items] |  |  |
Earn-out period |  |  | 3 years
Performance based earn-out payments (up to) |  |  | $ 63.0
3Z Telecom, Inc. |  |  |
Business Acquisition [Line Items] |  |  |
Cash consideration paid at closing | $ 23.2 |  |
Earn-out liability | $ 7.0 |  |
Earn-out period | 2 years |  |
3Z Telecom, Inc. | Customer Backlog |  |  |
Business Acquisition [Line Items] |  |  |
Estimated useful life | 1 year |  |
3Z Telecom, Inc. | Minimum |  |  |
Business Acquisition [Line Items] |  |  |
Estimated useful life | 5 years |  |
3Z Telecom, Inc. | Maximum |  |  |
Business Acquisition [Line Items] |  |  |
Estimated useful life | 6 years |  |
RPC Photonics, Inc. |  |  |
Business Acquisition [Line Items] |  |  |
Cash consideration paid at closing |  | $ 33.4 |
Earn-out period |  | 4 years |
Performance based earn-out payments (up to) |  | $ 53.0 |
RPC Photonics, Inc. | Customer Backlog |  |  |
Business Acquisition [Line Items] |  |  |
Estimated useful life |  | 1 year |
RPC Photonics, Inc. | Minimum |  |  |
Business Acquisition [Line Items] |  |  |
Estimated useful life |  | 6 years |
RPC Photonics, Inc. | Maximum |  |  |
Business Acquisition [Line Items] |  |  |
Estimated useful life |  | 7 years |

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- Definition For contingent consideration arrangements recognized in connection with a business combination, this element represents an estimate of the high-end of the potential range (undiscounted) of the consideration which may be paid. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479 + Details
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