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Business Segment, Geographic Area, Product and Significant Customer Information - Schedule of Capital Expenditures, Depreciation and Amortization Expense and Segment Assets by Reportable Segment (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2016 | Sep. 30, 2015 | Sep. 30, 2016 | Sep. 30, 2015
Segment Reporting Information [Line Items] |  |  |  |
Capital expenditures | $ 4,695 | $ 3,497 | $ 11,959 | $ 8,831
Depreciation and amortization | 22,049 | 5,524 | 43,757 | 16,606
Vacuum & Analysis Division [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Capital expenditures | 2,772 | 3,497 | 7,964 | 8,831
Depreciation and amortization | 5,142 | $ 5,524 | 15,628 | $ 16,606
Light & Motion Division [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Capital expenditures | 1,923 |  | 3,995 |
Depreciation and amortization | $ 16,907 |  | $ 28,129 |

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- Definition The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585 + Details
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