Number of customers accounted for ten or more percent of revenue.

No definition available.

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
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Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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-Topic 275
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6404-108592

+ Details

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- Definition

Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8672-108599

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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Business Segment, Geographic Area, Product/Service Offerings and Significant Customer Information - Additional Information (Detail)	3 Months Ended		9 Months Ended
	Sep. 30, 2020 Customer	Sep. 30, 2019 Customer	Sep. 30, 2020 Segment Customer	Sep. 30, 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	2	0
Sales Revenue, Net [Member] \| Customer Concentration Risk [Member] \| Lam Research Corporation [Member]
Segment Reporting Information [Line Items]
Percentage of total net revenues	14.10%		12.30%
Sales Revenue, Net [Member] \| Customer Concentration Risk [Member] \| Applied Materials, Inc. [Member]
Segment Reporting Information [Line Items]
Percentage of total net revenues	11.00%		10.80%