Segment Information, Significant Customers and Geographic Information - Schedule of Revenue by Major Customers by Reporting Segments (Detail) - Customer Concentration Risk [Member] - Total Revenues [Member] |
3 Months Ended | |
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Apr. 30, 2018 |
Apr. 30, 2017 |
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Customer A [Member] | ||
Entity Wide Revenue Major Customer [Line Items] | ||
% of total revenues | 19.00% | 25.00% |
Customer B [Member] | ||
Entity Wide Revenue Major Customer [Line Items] | ||
% of total revenues | 10.00% |
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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://www.xbrl.org/2003/role/presentationRef
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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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