Stock-based Compensation - Weighted-Average Assumptions Used to Estimate Fair Value (Detail) - Employee stock purchase plan awards [Member]	3 Months Ended		9 Months Ended
	Oct. 31, 2023	Oct. 31, 2022	Oct. 31, 2023	Oct. 31, 2022
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Volatility	54.00%	72.00%	56.00%	81.00%
Risk-free interest rate	5.49%	3.78%	5.11%	2.32%
Expected term (years)	6 months	6 months	6 months	6 months
Dividend yield	0.00%	0.00%	0.00%	0.00%