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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 |  |  |

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