Segments and Geographic Revenue - Schedule of total revenue by geographic areas (Details) - USD ($) $ in Thousands |
3 Months Ended | |
|---|---|---|
Apr. 30, 2018 |
Apr. 30, 2017 |
|
| Revenues from External Customers and Long-Lived Assets [Line Items] | ||
| Total | $ 48,222 | $ 32,390 |
| Americas | ||
| Revenues from External Customers and Long-Lived Assets [Line Items] | ||
| Total | 31,275 | 22,402 |
| Europe, Middle East and Africa | ||
| Revenues from External Customers and Long-Lived Assets [Line Items] | ||
| Total | 14,400 | 8,929 |
| Asia Pacific | ||
| Revenues from External Customers and Long-Lived Assets [Line Items] | ||
| Total | $ 2,547 | $ 1,059 |