Income Taxes - Effective Income Tax Rate Reconciliation (2025 and 2024) (Details)	12 Months Ended
	Jan. 31, 2026	Jan. 31, 2025	Jan. 31, 2024
%
Tax at federal statutory rate	21.00%	21.00%	21.00%
State, net of federal benefit		(0.10%)	(0.10%)
Stock-based compensation	4.80%	6.90%	2.40%
Non-deductible Executive Compensation	(20.40%)	(12.00%)	(4.70%)
Research tax credit		5.50%	6.20%
Foreign rate differential		(2.80%)	(1.80%)
Change in valuation allowance		(4.50%)	(83.30%)
Foreign derived intangible income deduction		0.20%	0.00%
Unrecognized tax benefits	(8.40%)	77.50%	(105.30%)
Other		(2.30%)	0.50%
Total	(21.80%)	89.40%	(165.10%)