Employee Benefits and Stock-based Compensation - Weighted-Average Assumptions Used to Estimate Fair Value (Detail) - Employee stock purchase plan awards [Member]	12 Months Ended
	Jan. 31, 2025	Jan. 31, 2024	Jan. 31, 2023
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Volatility	47.00%	56.00%	81.00%
Risk-free interest rate	4.97%	5.11%	2.32%
Expected term (years)	6 months	6 months	6 months
Dividend yield	0.00%	0.00%	0.00%