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Acquisitions - Additional Information (Detail) - USD ($) |  |  | 1 Months Ended | 2 Months Ended | 3 Months Ended | 4 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | --- | --- | ---
Jun. 11, 2015 | Oct. 31, 2014 | Jan. 31, 2017 | Dec. 31, 2014 | Mar. 31, 2016 | Oct. 04, 2015 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Payments of contingent consideration |  |  |  |  |  |  | $ 11,697,000 |  |
Universal Robots |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Total purchase price | $ 315,437,000 |  |  |  |  |  |  |  |
Cash paid to acquire outstanding common and preferred stock | 283,800,000 |  |  |  |  |  |  |  |
Contingent consideration | 31,600,000 |  |  |  |  |  |  |  |
Arrangement range of outcomes value high | 65,000,000 |  |  |  |  |  |  |  |
Payments of contingent consideration |  |  |  |  | $ 15,000,000 |  | $ 15,000,000 |  |
EBITDA contingent consideration amount, percentage |  |  |  |  | 100.00% |  | 100.00% |  |
Maximum payment per earn-out |  |  |  |  |  |  | $ 25,000,000 |  |
Goodwill, not deductible for tax purposes | $ 221,100,000 |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  | $ 41,900,000 |  |  |
Income (loss) before income taxes |  |  |  |  |  | $ (7,600,000) |  |  |
Net income |  |  |  |  |  |  |  | $ 199,784,000 | $ 61,078,000
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
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 |  |  |  |  |  |  |
Revenues |  |  |  | $ 600,000 |  |  |  |  |
Income (loss) before income taxes |  |  |  | $ (800,000) |  |  |  |  |
Net income |  |  |  |  |  |  |  |  | $ 82,169,000
Discount rate |  | 4.70% |  |  |  |  |  |  |
Goodwill, expected tax deduction |  | $ 10,500,000 |  |  |  |  |  |  |
Avionics Interface Technologies, LLC | Subsequent Event |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Payments of contingent consideration |  |  | $ 1,100,000 |  |  |  |  |  |

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- Definition The amount of goodwill arising from a business combination that is expected to be deductible for tax purposes. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479 + Details
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- Definition The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(2)-(3) -URI http://asc.fasb.org/extlink&oid=65885119&loc=d3e1392-128463 + Details
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- Definition This element represents the amount of earnings or loss of the acquiree since the acquisition date included in the consolidated income statement for the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=65885119&loc=d3e1392-128463 + Details
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- Definition This element represents the amount of revenue of the acquiree since the acquisition date included in the consolidated income statement for the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=65885119&loc=d3e1392-128463 + Details
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