Income Taxes - Schedule of Reconciliation Between the Provision (Benefit) for Income Taxes at the Statutory Rate and the Effective Tax Rate (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2022	Jan. 31, 2021	Jan. 31, 2020
Income Tax Disclosure [Abstract]
Provision at U.S. notional statutory rate	$ (6,015)	$ (12,034)	$ (8,742)
U.S. state taxes	(11)	212	3
Non-U.S. foreign tax differential	6,483	12,989	10,458
Stock-based compensation	1,900	4,943	4,172
U.S. R&D credit	(5,886)	(3,928)	(3,109)
Valuation allowance	765	0	0
FIN48 interest	311	0	0
Other	223	301	382
Provision (benefit) for income taxes	$ (2,230)	$ 2,483	$ 3,164