Stock-Based Compensation - Valuation Assumptions (Details) - Shares estimated to be purchased under ESPP	12 Months Ended
	Jan. 31, 2026	Jan. 31, 2025	Jan. 31, 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected life (years)	6 months	6 months	6 months
Expected volatility, minimum	41.28%	46.36%	55.12%
Expected volatility, maximum	50.80%	52.80%	76.43%
Dividend yield (as a percent)	0.00%	0.00%	0.00%
Risk-free rate, minimum	3.81%	4.55%	4.73%
Risk-free rate, maximum	4.29%	5.38%	5.49%