Segment Information, Significant Customers and Geographic Information - Schedule of Revenue by Major Customers by Reporting Segments (Detail) |
3 Months Ended | 6 Months Ended | ||
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Jul. 31, 2018 |
Jul. 31, 2017 |
Jul. 31, 2018 |
Jul. 31, 2017 |
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Customer A [Member] | Customer Concentration Risk [Member] | Total Revenues [Member] | ||||
Entity Wide Revenue Major Customer [Line Items] | ||||
% of total revenues | 19.00% | 26.00% | 19.00% | 25.00% |
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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. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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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. No definition available.
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