Segment Information, Significant Customers and Geographic Information - Additional Information (Detail) |
12 Months Ended |
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Jan. 31, 2017
Segment
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| Segment Reporting [Abstract] | |
| Number of reportable segment | 1 |
| Percentage of revenues by significant customers | 10.00% |
| X | ||||||||||
- Definition Disclosure of the extent of entity's reliance on its major customers. For example, includes revenues from transactions with a single external customer amounting to 10 percent or more of the entity's revenues, the total amount of revenues from each such customer or group of customers. No definition available.
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| X | ||||||||||
- 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. No definition available.
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| X | ||||||||||
- References No definition available.
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