Net Loss Per Share (Tables)
 3 Months Ended
Apr. 30, 2019
Earnings Per Share [Abstract]  
Schedule of Earnings Per Share, Basic and Diluted
The following table presents calculations for basic and diluted net loss per share (in thousands, except per share data):
 
Three Months Ended April 30,
 
2019
 
2018
Numerator:
 
 
 
Net loss
$
(19,809
)
 
$
(14,330
)
Denominator:
 
 
 
Weighted-average common shares outstanding
105,595

 
21,008

Net loss per share, basic and diluted
$
(0.19
)
 
$
(0.68
)
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share
The following outstanding shares of common stock equivalents (in thousands) as of the periods presented were excluded from the computation of diluted net loss per share attributable to common shareholders for the periods presented because the impact of including them would have been anti-dilutive:
 
April 30,
2019
 
2018
Convertible preferred shares (as converted)
—

 
68,480

Convertible preferred stock warrant
—

 
137

Shares subject to outstanding common stock awards
14,053

 
15,656

Shares issuable pursuant to the 2018 Employee Stock Purchase Plan
42

 
—

Total potentially dilutive shares
14,095

 
84,273