Segment Information, Significant Customers and Geographic Information - Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area (Parenthetical) (Detail) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||
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Jul. 31, 2016 |
Jul. 31, 2015 |
Jul. 31, 2016 |
Jul. 31, 2015 |
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Segment Reporting Information [Line Items] | ||||
Total revenues | $ 18,452 | $ 27,871 | $ 40,022 | $ 51,048 |
United States Revenue [Member] | ||||
Segment Reporting Information [Line Items] | ||||
Total revenues | $ 6,689 | $ 11,794 | $ 15,135 | $ 23,729 |
Total Revenue [Member] | Customer Concentration Risk [Member] | United States Revenue [Member] | ||||
Segment Reporting Information [Line Items] | ||||
% of total revenues | 36.30% | 42.30% | 37.80% | 46.50% |
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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 Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts. 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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