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Net Loss per Share - Schedule of Basic and Diluted Net Loss Per Share Attributable to Common Stockholders (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended 6 Months Ended
Jul. 31, 2022
Jul. 31, 2021
Jul. 31, 2022
Jul. 31, 2021
Numerator        
Net loss $ (15,369) $ (14,470) $ (35,203) $ (29,069)
Cumulative dividends on Series G redeemable convertible preferred stock 0 (1,438) 0 (2,917)
Net loss attributable to common stockholders (15,369) (15,908) (35,203) (31,986)
Net loss attributable to common stockholders $ (15,369) $ (15,908) $ (35,203) $ (31,986)
Denominator        
Weighted-average shares used in computing net loss per share attributable to common stockholders, basic (in shares) 44,648 9,045 44,459 7,696
Weighted-average shares used in computing net loss per share attributable to common stockholders, diluted (in shares) 44,648 9,045 44,459 7,696
Net loss per share attributable to common stockholders, basic (in dollars per share) $ (0.34) $ (1.76) $ (0.79) $ (4.16)
Net loss per share attributable to common stockholders, diluted (in dollars per share) $ (0.34) $ (1.76) $ (0.79) $ (4.16)