Consolidated Statements of Redeemable Convertible Preferred Stock and Stockholders' Equity (Paranthetical) - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Jan. 31, 2018 |
Jan. 31, 2019 |
|
| Series D | ||
| Stock issuance costs | $ 187 | |
| Series D-1 | ||
| Stock issuance costs | $ 78 | |
| Series E | ||
| Stock issuance costs | $ 104 | |