Equity Incentive Plans and Stock-Based Compensation - Fair Value Assumptions for ESPP Shares (Details) - ESPP - Weighted Average	12 Months Ended
	Jan. 31, 2025	Jan. 31, 2024	Jan. 31, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected term (years)	6 months	6 months	6 months
Expected volatility	63.00%	67.40%	69.00%
Risk-free interest rate	5.15%	5.02%	1.86%
Expected dividend yield	0.00%	0.00%	0.00%