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Acquisitions - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands |  | 3 Months Ended |
--- | --- | --- | ---
Feb. 01, 2019 | Mar. 31, 2019 | Mar. 31, 2018 | Dec. 31, 2018
Business Acquisition [Line Items] |  |  |  |
Business acquisition share price | $ 30.00 |  |  |
Stock-based compensation expense |  | $ 27,838 | $ 10,426 |
Acquisition and integration costs |  | 6,764 |  |
Electro Scientific Industries Inc [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Business acquisition share price | $ 30.00 |  |  |
Business acquisition, total cash consideration | $ 1,032,671 |  |  |
Non Cash Consideration related to share based compensation awards | 30,630 |  |  |
Total Purchase Consideration | $ 1,063,301 |  |  |
Fair value write-up of acquired finished goods inventory |  | 8,383 |  |
Incremental costs of sales charge |  | 5,140 |  |
Fair value write-up of acquired property, plant and equipment |  |  |  | $ 26,667
Compensation expense |  | 2,701 |  |
Stock-based compensation expense |  | $ 14,023 |  |

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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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5047-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -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=115993241&loc=d3e301413-122809 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -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=109197908&loc=d3e5070-113901 + Details
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