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Schedule of Amortizable Intangible Assets (Parenthetical) (Detail) - USD ($) $ in Thousands |  | 6 Months Ended
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Apr. 25, 2018 | Jul. 01, 2018
Finite-Lived Intangible Assets |  |
Impairment of intangible assets |  | $ 300
Mobile Industrial Robots (MiR) |  |
Finite-Lived Intangible Assets |  |
Intangible assets acquired | $ 79,660 | 79,700
Energid Technologies Corporation |  |
Finite-Lived Intangible Assets |  |
Intangible assets acquired |  | $ 12,300

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- Definition Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, from an acquisition. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + Details
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- Definition The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of a finite-lived intangible asset to fair value. + 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 (b) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16373-109275 + Details
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