Segment Information, Significant Customers and Geographic Information - Additional Information (Detail) |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
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Oct. 31, 2018
Customer
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Oct. 31, 2017
Customer
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Oct. 31, 2018
Customer
Segment
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Oct. 31, 2017
Customer
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| Segment Reporting Information [Line Items] | ||||
| Number of reportable segment | Segment | 1 | |||
| Total Revenues [Member] | ||||
| Segment Reporting Information [Line Items] | ||||
| Number of customers accounted | Customer | 4 | 1 | 1 | 1 |
| X | ||||||||||
- Definition Number Of Major 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 | ||||||||||
- 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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| X | ||||||||||
- Details
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