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v3.10.0.1

Consolidated Quarterly Statements of Operations (Parenthetical) (Detail) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2018 | Sep. 30, 2018 | Jul. 01, 2018 | Apr. 01, 2018 | Dec. 31, 2017 | Oct. 01, 2017 | Jul. 02, 2017 | Apr. 02, 2017 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Quarterly Financial Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Contingent consideration fair value adjustment |  |  |  |  |  |  |  |  | $ 987 | $ 7,820 | $ 15,896
Severance benefit and charges | $ 800 | $ 1,700 | $ 2,400 | $ 3,900 | $ 1,800 | $ 600 | $ 800 | $ 600 |  |  |
Acquisition related expense and compensation | 500 | 800 | 2,500 | 800 |  |  |  |  | 4,500 |  |
Impairment of fixed assets |  |  |  |  | 1,100 |  |  |  |  |  |
Pension and post retirement net actuarial (gains) losses | (3,500) | 300 | (100) |  | (3,800) |  | (2,800) |  |  |  |
Impairment of Fixed Assets and Expenses Related to the Japan Earthquake |  |  |  |  |  |  |  |  |  |  |
Quarterly Financial Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Property insurance recovery |  |  |  |  |  | 5,100 |  |  |  | 5,100 | 5,100
Impairment of Fixed Assets and Expenses Related to the Japan Earthquake | Earthquake Related Expenses |  |  |  |  |  |  |  |  |  |  |
Quarterly Financial Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Impairment of fixed assets and other expenses |  |  |  |  |  | 800 |  |  |  | 800 | 900
Universal Robots (UR) |  |  |  |  |  |  |  |  |  |  |
Quarterly Financial Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Contingent consideration fair value adjustment | 7,400 | $ 800 | $ 3,500 | $ 5,000 | $ 6,000 | (300) | $ 1,500 | 600 | (16,700) | $ 7,800 | $ 15,300
Mobile Industrial Robots (MiR) |  |  |  |  |  |  |  |  |  |  |
Quarterly Financial Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Contingent consideration fair value adjustment | $ 17,700 |  |  |  |  |  |  |  | $ 17,700 |  |
Wireless Test |  |  |  |  |  |  |  |  |  |  |
Quarterly Financial Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Lease impairment |  |  |  |  |  |  |  | $ 1,300 |  |  |
Previously impaired lease termination |  |  |  |  |  | $ 400 |  |  |  |  |

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- Definition This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 23 -URI http://asc.fasb.org/extlink&oid=84229725&loc=d3e1043-128460 + Details
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- Definition Amount of increase (decrease) in the value of a contingent consideration liability, including, but not limited to, differences arising upon settlement. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 4 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e7008-128479 + Details
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- Definition Amount of gain (loss) from change in actuarial assumptions which (increases) decreases benefit obligation of defined benefit plan. Assumptions include, but are not limited to, interest, mortality, employee turnover, salary, and temporary deviation from substantive plan. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 + Details
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- Definition The net amount (to the extent disclosed within this portion of the income statement) by which an insurance settlement exceeds incremental costs incurred from the event causing an interruption of business, plus the insurance award for earnings lost from the event, such as a natural catastrophe, explosion or fire. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=114868897&loc=SL114872001-224240 + Details
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