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 |
12 Months Ended | ||
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Jan. 31, 2017 |
Jan. 31, 2016 |
Jan. 31, 2015 |
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Segment Reporting Information [Line Items] | |||
Total revenues | $ 83,795 | $ 106,992 | $ 115,435 |
United States Revenue [Member] | |||
Segment Reporting Information [Line Items] | |||
Total revenues | $ 30,094 | $ 46,978 | $ 59,819 |
Total Revenue [Member] | Customer Concentration Risk [Member] | |||
Segment Reporting Information [Line Items] | |||
% of total revenue | 10.00% | 10.00% | 10.00% |
Total Revenue [Member] | Customer Concentration Risk [Member] | United States Revenue [Member] | |||
Segment Reporting Information [Line Items] | |||
% of total revenue | 35.90% | 43.90% | 51.80% |
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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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