v3.20.4
Consolidated Statements of Redeemable Convertible Preferred Stock and Stockholders' Equity (Parenthetical)
$ in Thousands
12 Months Ended
Jan. 31, 2019
USD ($)
Accounting Standards Update [Extensible List] us-gaap:AccountingStandardsUpdate201409Member
Redeemable Convertible Preferred Stock  
Stock issuance costs $ 104