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Acquisitions - Additional Information (Detail) - USD ($) |  | 1 Months Ended | 3 Months Ended | 6 Months Ended
--- | --- | --- | --- | ---
Jun. 11, 2015 | Jul. 05, 2015 | Dec. 31, 2015 | Jul. 05, 2015 | Jul. 03, 2016 | Jul. 05, 2015
Business Acquisition [Line Items] |  |  |  |  |  |
Payments of contingent consideration |  |  |  |  | $ 11,697,000 |
Universal Robots |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Total purchase price | $ 315,437,000 |  |  |  |  |
Cash paid to acquire outstanding common and preferred stock | 283,800,000 |  |  |  |  |
Contingent consideration | 31,600,000 |  |  |  |  |
Arrangement range of outcomes value high | 65,000,000 |  |  |  |  |
Payments of contingent consideration |  |  |  |  | $ 15,000,000 |
EBITDA contingent consideration amount, percentage |  |  |  |  | 100.00% |
Decrease in goodwill |  |  | $ (5,400,000) |  |  |
Contingent consideration adjustment |  |  | (2,200,000) |  |  |
Increase in intangible assets |  |  | 1,600,000 |  |  |
Decrease in acquired liabilities |  |  | $ (1,600,000) |  |  |
Goodwill, not deductible for tax purposes | $ 221,100,000 |  |  |  |  |
Revenues |  | $ 3,700,000 |  |  |  |
Income (loss) before income taxes |  | $ (1,700,000) |  |  |  |
Net income |  |  |  | $ 99,719,000 |  | $ 126,644,000
Universal Robots | Fair Value Adjustment to Inventory |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Net income |  |  |  | 600,000 |  | 600,000
Universal Robots | Acquisition Related Costs |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Net income |  |  |  | $ 1,000,000 |  | $ 1,000,000

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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/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(2)-(3) -URI http://asc.fasb.org/extlink&oid=65885119&loc=d3e1392-128463 + Details
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