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Goodwill and Intangible Assets - Textual (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 29, 2018 | Dec. 30, 2017 | Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items] |  |  |
Total amortization expense | $ 400,000 | $ 200,000 | $ 1,500,000
Impairment charges | 0 | $ 0 |
Fully amortized intangible assets, retired | $ 16,100,000 |  |
Minimum [Member] |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Finite-lived intangibles estimated lives | 2 years |  |
Maximum [Member] |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Finite-lived intangibles estimated lives | 15 years |  |
4D Technology [Member] |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Intangible assets acquired | $ 23,500,000 |  |
Intangible assets acquired, In-Process research and development | $ 1,400,000 |  |

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- Definition Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=109226348&loc=d3e2420-110228 + Details
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