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Acquisitions - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands |  |  |  | 3 Months Ended | 9 Months Ended
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Apr. 29, 2016 | Apr. 27, 2016 | Mar. 17, 2015 | Sep. 30, 2016 | Sep. 30, 2015 | Sep. 30, 2016 | Sep. 30, 2015
Business Acquisition [Line Items] |  |  |  |  |  |  |
Business acquisition share price |  |  |  | $ 23.00 |  | $ 23.00 |
Measurement period from acquisition date |  |  |  |  |  | 1 year |
Stock-based compensation expense |  |  |  | $ 5,158 | $ 3,247 | $ 19,826 | $ 10,025
Payments to acquire business, net of cash acquired |  |  |  |  |  | 939,591 | $ 9,910
Reno Sub-Systems Inc [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Investments in minority interest |  | $ 9,300 |  |  |  |  |
Precisive, LLC [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Payments to acquire business, net of cash acquired |  |  | $ 12,085 |  |  |  |
Business acquisition, cash acquired |  |  | 435 |  |  |  |
Business acquisition, deferred consideration payment |  |  | $ 2,600 |  |  |  |
Newport [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Business acquisition share price | $ 23.00 |  |  |  |  |  |
Incremental cost of sales charges |  |  |  | 4,971 |  | 15,090 |
Fair value write-up of acquired property, plant and equipment |  |  |  | $ 36,242 |  | 36,242 |
Compensation expense |  |  |  |  |  | 6,631 |
Stock-based compensation expense |  |  |  |  |  | $ 3,334 |
Payments to acquire business, net of cash acquired | $ 945,815 |  |  |  |  |  |
Business acquisition, cash acquired | $ 61,463 |  |  |  |  |  |

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- Definition Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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