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Acquisitions - Schedule of Consolidated Net Revenue and Earnings (Detail) - Electro Scientific Industries Inc [Member] - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2019 | Sep. 30, 2019
Acquisition Date [Line Items] |  |
Total net revenues | $ | $ 49,308 | $ 140,403
Net loss | $ | $ (5,843) | $ (40,685)
Net loss per share: |  |
Basic | $ / shares | $ (0.11) | $ (0.74)
Diluted | $ / shares | $ (0.11) | $ (0.74)

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