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Acquisitions - Additional Information (Detail) - USD ($) |  |  | 3 Months Ended | 4 Months Ended | 9 Months Ended |
--- | --- | --- | --- | --- | --- | ---
Jun. 11, 2015 | Oct. 31, 2014 | Oct. 04, 2015 | Sep. 28, 2014 | Oct. 04, 2015 | Oct. 04, 2015 | Sep. 28, 2014 | Dec. 31, 2014
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Contingent consideration |  |  |  | $ 14,447,000 |  | $ 14,447,000 | $ 14,447,000 |  | $ 895,000
Revenues |  |  |  | 465,994,000 | $ 478,010,000 |  | 1,321,133,000 | $ 1,324,587,000 |
Income (loss) before income taxes | [1],[2] |  |  | 87,408,000 | 100,670,000 |  | 261,981,000 | 220,189,000 |
Net income |  |  |  |  | $ 76,112,000 |  | 197,745,000 | 162,474,000 |
Contingent consideration adjustment |  |  |  |  |  |  | (2,600,000) | (630,000) |
Avionics Interface Technologies, LLC |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Total purchase price |  |  | $ 21,243,000 |  |  |  |  |  |
Cash paid to acquire outstanding common and preferred stock |  |  | 19,400,000 |  |  |  |  |  |
Contingent consideration |  |  | 1,800,000 |  |  |  |  |  |
Arrangement range of outcomes value high |  |  | $ 2,100,000 |  |  |  |  |  |
Discount rate |  |  | 4.70% |  |  |  |  |  |
Contingent consideration adjustment |  |  |  | (1,000,000) |  |  | (1,000,000) |  |
Goodwill, expected tax deduction |  |  | $ 10,500,000 |  |  |  |  |  |
Universal Robots |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Total purchase price |  | $ 317,686,000 |  |  |  |  |  |  |
Cash paid to acquire outstanding common and preferred stock |  | 283,900,000 |  |  |  |  |  |  |
Contingent consideration |  | 33,800,000 |  |  |  |  |  |  |
Arrangement range of outcomes value high |  | 65,000,000 |  |  |  |  |  |  |
Goodwill, not deductible for tax purposes |  | $ 227,000,000 |  |  |  |  |  |  |
Revenues |  |  |  | 16,100,000 |  | 19,800,000 |  |  |
Income (loss) before income taxes |  |  |  | $ (4,800,000) |  | $ (6,500,000) |  |  |
Universal Robots | Fair Value Adjustment to Inventory |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Net income |  |  |  |  |  |  | (1,600,000) | 1,600,000 |
Universal Robots | Acquisition Related Costs |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Net income |  |  |  |  |  |  | $ (1,000,000) | $ 1,000,000 |
Universal Robots | Discount Rate One |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Discount rate |  | 6.00% |  |  |  |  |  |  |
Universal Robots | Discount Rate Two |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Discount rate |  | 8.00% |  |  |  |  |  |  |
Universal Robots | Discount Rate Three |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Discount rate |  | 10.00% |  |  |  |  |  |  |
[1] | Included in the income (loss) before income taxes for each of the segments are charges related to inventory and other.
[2] | Interest income, interest expense, and other (income) expense, net are included in Corporate and Eliminations.

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