Components of Intangible Assets and Their Estimated Useful Lives at Acquisition Date (Detail) - USD ($) $ in Thousands				12 Months Ended
	Jun. 11, 2015	Oct. 31, 2014	Oct. 25, 2013	Dec. 31, 2015	Dec. 31, 2014
ZTEC Instruments, Inc.
Business Acquisition [Line Items]
Total intangible assets, fair value			$ 4,870
Total intangible assets, estimated useful life, years			5 years 3 months 18 days
Universal Robots
Business Acquisition [Line Items]
Total intangible assets, fair value	$ 121,590			$ 121,590
Total intangible assets, estimated useful life, years	5 years 7 months 6 days
Avionics Interface Technologies, LLC
Business Acquisition [Line Items]
Total intangible assets, fair value		$ 9,080			$ 9,080
Total intangible assets, estimated useful life, years		4 years 9 months 18 days
Developed technology \| ZTEC Instruments, Inc.
Business Acquisition [Line Items]
Total intangible assets, fair value			$ 3,500
Total intangible assets, estimated useful life, years			5 years
Developed technology \| Universal Robots
Business Acquisition [Line Items]
Total intangible assets, fair value	$ 89,240
Total intangible assets, estimated useful life, years	4 years 10 months 24 days
Developed technology \| Avionics Interface Technologies, LLC
Business Acquisition [Line Items]
Total intangible assets, fair value		$ 2,580
Total intangible assets, estimated useful life, years		4 years 9 months 18 days
Customer Relationships \| ZTEC Instruments, Inc.
Business Acquisition [Line Items]
Total intangible assets, fair value			$ 1,370
Total intangible assets, estimated useful life, years			6 years
Customer Relationships \| Universal Robots
Business Acquisition [Line Items]
Total intangible assets, fair value	$ 9,430
Total intangible assets, estimated useful life, years	2 years
Customer Relationships \| Avionics Interface Technologies, LLC
Business Acquisition [Line Items]
Total intangible assets, fair value		$ 5,630
Total intangible assets, estimated useful life, years		5 years
Trademarks and tradenames \| Universal Robots
Business Acquisition [Line Items]
Total intangible assets, fair value	$ 22,920
Total intangible assets, estimated useful life, years	10 years
Trademarks and tradenames \| Avionics Interface Technologies, LLC
Business Acquisition [Line Items]
Total intangible assets, fair value		$ 380
Total intangible assets, estimated useful life, years		5 years
Non-compete Agreements \| Avionics Interface Technologies, LLC
Business Acquisition [Line Items]
Total intangible assets, fair value		$ 320
Total intangible assets, estimated useful life, years		4 years
Customer backlog \| Avionics Interface Technologies, LLC
Business Acquisition [Line Items]
Total intangible assets, fair value		$ 170
Total intangible assets, estimated useful life, years		3 months 18 days