Components of Intangible Assets and Their Estimated Useful Lives at Acquisition Date (Detail) - USD ($) $ in Thousands	Jun. 11, 2015	Oct. 31, 2014
Avionics Interface Technologies, LLC
Business Acquisition [Line Items]
Total intangible assets, fair value		$ 9,080
Total intangible assets, estimated useful life, years		4 years 9 months 18 days
Avionics Interface Technologies, LLC | Customer Relationships
Business Acquisition [Line Items]
Total intangible assets, fair value		$ 5,630
Total intangible assets, estimated useful life, years		5 years
Avionics Interface Technologies, LLC | Developed technology
Business Acquisition [Line Items]
Total intangible assets, fair value		$ 2,580
Total intangible assets, estimated useful life, years		4 years 9 months 18 days
Avionics Interface Technologies, LLC | Trademarks and tradenames
Business Acquisition [Line Items]
Total intangible assets, fair value		$ 380
Total intangible assets, estimated useful life, years		5 years
Avionics Interface Technologies, LLC | Non-compete Agreements
Business Acquisition [Line Items]
Total intangible assets, fair value		$ 320
Total intangible assets, estimated useful life, years		4 years
Avionics Interface Technologies, LLC | Customer order backlog
Business Acquisition [Line Items]
Total intangible assets, fair value		$ 170
Total intangible assets, estimated useful life, years		3 months 18 days
Universal Robots
Business Acquisition [Line Items]
Total intangible assets, fair value	$ 119,950
Total intangible assets, estimated useful life, years	5 years 7 months 6 days
Universal Robots | Customer Relationships
Business Acquisition [Line Items]
Total intangible assets, fair value	$ 9,380
Total intangible assets, estimated useful life, years	2 years
Universal Robots | Developed technology
Business Acquisition [Line Items]
Total intangible assets, fair value	$ 88,890
Total intangible assets, estimated useful life, years	4 years 10 months 24 days
Universal Robots | Trademarks and tradenames
Business Acquisition [Line Items]
Total intangible assets, fair value	$ 21,680
Total intangible assets, estimated useful life, years	10 years