Acquisitions and Dispositions - Schedule of Consolidated Net Revenue and Earnings (Detail) - Electro Scientific Industries Inc [Member] $ / shares in Units, $ in Thousands	3 Months Ended
Dec. 31, 2019 USD ($) $ / shares
Acquisition Date [Line Items]
Total net revenues \| $ \| $	$ 183,680
Net loss \| $	$ (33,446)
Net loss per share: \| $
Basic \| $ / shares \| $ / shares	$ (0.61)
Diluted \| $ / shares \| $ / shares	$ (0.61)

This element represents the amount of earnings or loss of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)
-URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463

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