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Acquisition - Textual (Details) - USD ($) $ / shares in Units, $ in Thousands |  | 12 Months Ended
--- | --- | ---
Nov. 15, 2018 | Dec. 29, 2018 | Dec. 30, 2017 | Dec. 31, 2016
Business Acquisition [Line Items] |  |  |  |
Acquire paid in cash, net |  | $ 37,163 |  |
Net sales |  | 324,523 | $ 258,621 | $ 221,129
Operating loss |  | $ (66,487) | (42,806) | $ (29,095)
Maximum [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Estimated useful life |  | 15 years |  |
Minimum [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Estimated useful life |  | 2 years |  |
Developed technology [Member] | Maximum [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Estimated useful life |  | 10 years |  |
Developed technology [Member] | Minimum [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Estimated useful life |  | 9 years |  |
Customer relationships [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Estimated useful life |  | 9 years |  |
Backlog [Member] | Maximum [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Estimated useful life |  | 1 year |  |
Trade name [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Estimated useful life |  | 15 years |  |
4D Technology [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Account receivable not expected to be collected |  | $ 161 |  |
Finite-lived intangible assets |  | $ 22,100 |  |
Weighted average estimated useful life |  | 9 years 3 months |  |
Net sales |  | $ 2,100 |  |
Operating loss |  | 400 |  |
Pro forma net revenue |  | 338,919 | 271,966 |
Pro forma net income |  | 57,672 | 29,302 |
Business acquisition, related costs |  | 900 |  |
4D Technology [Member] | Material Nonrecurring Adjustments [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Pro forma net revenue |  | 3,500 | 3,500 |
Pro forma net income |  | $ 1,700 | $ 1,700 |
4D Technology [Member] | Developed technology [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Estimated useful life |  | 9 years |  |
4D Technology [Member] | Customer relationships [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Estimated useful life |  | 9 years |  |
4D Technology [Member] | Backlog [Member] | Maximum [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Estimated useful life |  | 1 year |  |
4D Technology [Member] | Trade name [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Estimated useful life |  | 15 years |  |
4D Technology [Member] | Stock Purchase Agreement [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquire paid in cash | $ 38,700 |  |  |
Acquire paid in cash, net | $ 37,200 |  |  |
4D Technology [Member] | Stock Purchase Agreement [Member] | Common Stock [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquire share | 125,117 |  |  |
Acquire share price | $ 0.001 |  |  |
Acquire share value | $ 4,000 |  |  |

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- Definition Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + Details
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- Definition Amount of direct costs of the business combination including legal, accounting, and other costs incurred to consummate the business acquisition. + References No definition available. + Details
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- Definition Value of equity interests (such as common shares, preferred shares, or partnership interest) issued or issuable to acquire the entity. + 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 (b)(4) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479 + Details
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- Definition The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(3) -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(2) -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 + Details
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- Definition The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3213-108585 + Details
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