Business Segment, Geographic Area, Product/Service Offerings and Significant Customer Information - Additional Information (Detail)	3 Months Ended
Mar. 31, 2020 Segment Customer	Mar. 31, 2019 Customer
Segment Reporting Information [Line Items]
Number of reportable segments \| Segment	2
Number of customers accounted for 10% or more of total revenue \| Customer	2	0
Sales Revenue, Net [Member] \| Customer Concentration Risk [Member] \| Applied Materials, Inc. [Member]
Segment Reporting Information [Line Items]
Percentage of total net revenues	11.00%
Sales Revenue, Net [Member] \| Customer Concentration Risk [Member] \| Lam Research Corporation [Member]
Segment Reporting Information [Line Items]
Percentage of total net revenues	10.00%

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
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