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Acquisitions - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands |  | 3 Months Ended | 9 Months Ended
--- | --- | --- | ---
Feb. 01, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018
Business Acquisition [Line Items] |  |  |  |  |  |
Business acquisition share price | $ 30.00 |  |  |  |  |
Stock-based compensation expense |  | $ 7,373 |  | $ 5,213 | $ 42,140 | $ 22,005
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 |  |  | $ 7,624 |  |  |
Incremental costs of sales charge |  |  |  |  | 7,624 |
Fair value write-up of acquired property, plant and equipment |  | $ 39,267 |  |  | 39,267 |
Compensation expense |  |  |  |  | 2,701 |
Stock-based compensation expense |  |  |  |  | $ 14,023 |
Electro Scientific Industries Inc [Member] | Property Plant and Equipment [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Assets, fair value adjustment |  |  | 12,600 |  |  |
Electro Scientific Industries Inc [Member] | Inventories [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Assets, fair value adjustment |  |  | 9,800 |  |  |
Electro Scientific Industries Inc [Member] | Intangible assets [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Assets, fair value adjustment |  |  | 2,400 |  |  |
Electro Scientific Industries Inc [Member] | Goodwill [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Assets, fair value adjustment |  |  | $ 1,300 |  |  |

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