Net Loss per Share - Summary of Computation of Basic and Diluted Net Loss Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Apr. 30, 2022	Apr. 30, 2021
Numerator:
Net loss	$ (4,699)	$ (14,573)
Dividend on series A convertible preferred stock	(3,695)
Accretion of series A convertible preferred stock	(527)
Net loss attributable to common stockholders	$ (8,921)	$ (14,573)
Denominator:
Weighted-average number of shares used to compute net loss per share attributable to common stockholders, basic and diluted	144,725	161,733
Net loss per share attributable to common stockholders, basic and diluted	$ (0.06)	$ (0.09)