Net Loss Per Ordinary Share - Computation of Basic and Diluted Net Loss Per Ordinary Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Jan. 31, 2025	Jan. 31, 2024	Jan. 31, 2023
Numerator:
Net loss	$ (117,126)	$ (169,417)	$ (65,386)
Denominator:
Weighted-average ordinary shares - basic	41,303,287	39,878,872	38,363,638
Weighted-average ordinary shares - diluted	41,303,287	39,878,872	38,363,638
Net loss per ordinary share:
Basic	$ (2.84)	$ (4.25)	$ (1.7)
Diluted	$ (2.84)	$ (4.25)	$ (1.7)