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Net Loss Per Share Attributable to Common Stockholders - Schedule of Earnings Per Share, Basic and Diluted (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 6 Months Ended 12 Months Ended
Jul. 31, 2022
Apr. 30, 2022
Jul. 31, 2021
Apr. 30, 2021
Jul. 31, 2022
Jul. 31, 2021
Jan. 31, 2022
Numerator:              
Net loss attributable to common stockholders $ (19,991) $ (25,839) $ (27,592) $ (17,631) $ (45,830) $ (45,223) $ (93,259)
Denominator:              
Weighted-average common shares outstanding, basic (in shares) 124,234,226   126,906,937   127,631,877 126,152,602  
Weighted-average common shares outstanding, diluted (in shares) 124,234,226   126,906,937   127,631,877 126,152,602  
Net loss per share attributable to common stockholders, basic (in dollars per share) $ (0.16)   $ (0.22)   $ (0.36) $ (0.36)  
Net loss per share attributable to common stockholders, diluted (in dollars per share) $ (0.16)   $ (0.22)   $ (0.36) $ (0.36)