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Allocation of Final Purchase Price (Detail) - USD ($) $ in Thousands | Dec. 31, 2015 | Jun. 11, 2015 | Dec. 31, 2014 | Oct. 31, 2014 | Oct. 25, 2013
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Business Acquisition [Line Items] |  |  |  |  |
Goodwill | $ 488,413 |  | $ 273,438 |  |
Avionics Interface Technologies, LLC |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Goodwill |  |  |  | $ 10,516 |
Intangible assets |  |  |  | 9,080 |
Current assets |  |  |  | 2,452 |
Non-current assets |  |  |  | 359 |
Accounts payable and current liabilities |  |  |  | (1,164) |
Total purchase price |  |  |  | $ 21,243 |
Universal Robots |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Goodwill |  | $ 221,128 |  |  |
Intangible assets |  | 121,590 |  |  |
Current assets |  | 10,853 |  |  |
Non-current assets |  | 3,415 |  |  |
Accounts payable and current liabilities |  | (11,976) |  |  |
Long-term deferred tax liabilities |  | (26,653) |  |  |
Long-term other liabilities |  | (2,920) |  |  |
Total purchase price |  | $ 315,437 |  |  |
ZTEC Instruments, Inc. |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Goodwill |  |  |  |  | $ 12,520
Intangible assets |  |  |  |  | 4,870
Cash |  |  |  |  | 79
Other current assets |  |  |  |  | 1,612
Non-current assets |  |  |  |  | 1,757
Accounts payable and current liabilities |  |  |  |  | (1,811)
Long-term deferred tax liabilities |  |  |  |  | (1,719)
Total purchase price |  |  |  |  | $ 17,308

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