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Acquisitions - Narrative (Details) - USD ($) $ in Millions |  | 3 Months Ended | 9 Months Ended
--- | --- | --- | ---
Jan. 02, 2019 | Sep. 29, 2019 | Sep. 30, 2018 | Sep. 29, 2019 | Sep. 30, 2018
NextGen Global Resources LLC |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Ownership percentage acquired | 100.00% |  |  |  |
Purchase price of acquisition | $ 51.0 |  |  |  |
Purchase price paid at closing | 54.3 |  |  |  |
Intangible assets acquired | $ 21.5 |  |  |  |
Pro forma information, revenue of acquiree since acquisition date, actual |  | $ 20.0 |  | $ 62.9 |
Pro forma information, earnings or loss of acquiree since acquisition date, actual |  | 1.3 |  | 3.7 |
Business combination, revenue reported by acquired entity for prior period |  |  | $ 19.3 |  | $ 47.5
Business combination, net earnings reported by acquired entity for prior period |  |  | 1.4 |  | 2.0
Global Technology Associates, LLC |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Ownership percentage acquired | 100.00% |  |  |  |
Purchase price of acquisition | $ 34.0 |  |  |  |
Purchase price paid at closing | 35.7 |  |  |  |
Intangible assets acquired | 17.3 |  |  |  |
Pro forma information, revenue of acquiree since acquisition date, actual |  | 15.8 |  | 48.2 |
Pro forma information, earnings or loss of acquiree since acquisition date, actual |  | $ 0.9 |  | $ 3.4 |
Business combination, revenue reported by acquired entity for prior period |  |  | 11.9 |  | 28.2
Business combination, net earnings reported by acquired entity for prior period |  |  | $ 1.1 |  | $ 1.8
Customer Relationships | NextGen Global Resources LLC |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Intangible assets acquired | $ 12.9 |  |  |  |
Acquired finite-lived intangible assets, weighted average useful life | 10 years |  |  |  |
Customer Relationships | Global Technology Associates, LLC |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Intangible assets acquired | $ 12.1 |  |  |  |
Acquired finite-lived intangible assets, weighted average useful life | 10 years |  |  |  |
Trade Names | NextGen Global Resources LLC |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Intangible assets acquired | $ 8.1 |  |  |  |
Acquired finite-lived intangible assets, weighted average useful life | 15 years |  |  |  |
Trade Names | Global Technology Associates, LLC |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Intangible assets acquired | $ 4.0 |  |  |  |
Acquired finite-lived intangible assets, weighted average useful life | 15 years |  |  |  |
Noncompete Agreements | NextGen Global Resources LLC |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Intangible assets acquired | $ 0.5 |  |  |  |
Acquired finite-lived intangible assets, weighted average useful life | 5 years |  |  |  |
Noncompete Agreements | Global Technology Associates, LLC |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Intangible assets acquired | $ 1.2 |  |  |  |
Acquired finite-lived intangible assets, weighted average useful life | 5 years |  |  |  |

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