Income Taxes - Effective Income Tax Rate Reconciliation (2026) (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2026	Jan. 31, 2025	Jan. 31, 2024
Amount
Tax at federal statutory rate	$ (10,093)
Federal effect of foreign DREs	8,240
Foreign tax credit	(7,414)
Base Erosion and Anti-Abuse Tax	2,307
Other effects of cross-border tax laws	583
Tax credits	(3,417)
Effect of changes in tax laws or rate enacted in the current period	0
Non-deductible executive compensation	9,785
Stock-based compensation	(2,292)
Stock donation	1,490
Other non-deductible expenses	(74)
Changes in unrecognized tax benefits	4,020
Provision for (benefit from) income taxes	$ 10,499	$ (76,674)	$ 265,145
%
Tax at federal statutory rate	21.00%	21.00%	21.00%
State income taxes, net of federal effect		(0.10%)	(0.10%)
Change in valuation allowance		(4.50%)	(83.30%)
Other		(2.30%)	0.50%
Foreign rate differential		(2.80%)	(1.80%)
Federal effect of foreign DREs	(17.10%)
Foreign tax credit	15.40%
Base Erosion and Anti-Abuse Tax	(4.80%)
Other effects of cross-border tax laws	(1.20%)
Tax credits	7.10%
Effect of changes in tax laws or rate enacted in the current period	0.00%
Non-deductible Executive Compensation	(20.40%)	(12.00%)	(4.70%)
Stock-based compensation	4.80%	6.90%	2.40%
Stock donation	(3.10%)
Other non-deductible expenses	0.20%
Changes in unrecognized tax benefits	(8.40%)	77.50%	(105.30%)
Total	(21.80%)	89.40%	(165.10%)
United States
Amount
State income taxes, net of federal effect	$ 989
Valuation Allowance	5,030
Other	$ 170
%
State income taxes, net of federal effect	(2.10%)
Change in valuation allowance	(10.50%)
Other	(0.40%)
Australia:
Amount
Valuation Allowance	$ 1,088
Other	$ 105
%
Change in valuation allowance	(2.30%)
Other	(0.20%)
Canada
Amount
Foreign rate differential	$ (688)
%
Foreign rate differential	1.40%
China:
Amount
Foreign rate differential	$ 1,199
%
Foreign rate differential	(2.50%)
Germany
Amount
State income taxes, net of federal effect	$ 1,275
Other	$ 335
%
State income taxes, net of federal effect	(2.60%)
Other	(0.70%)
Israel:
Amount
Valuation Allowance	$ (651)
Other	$ 43
%
Change in valuation allowance	1.40%
Other	(0.10%)
Netherlands
Amount
Valuation Allowance	$ (1,318)
Other	$ 501
%
Change in valuation allowance	2.70%
Other	(1.00%)
Singapore:
Amount
Other	$ 71
Nondeductible VAT interest and penalties	$ 798
%
Other	(0.10%)
Nondeductible VAT interest and penalties	(1.60%)
United Kingdom
Amount
Other	$ 74
Foreign rate differential	627
Tax effect of stock-based compensation	$ (2,328)
%
Other	(0.10%)
Foreign rate differential	(1.30%)
Tax effect of stock-based compensation	4.80%
All other foreign
Amount
Foreign rate differential	$ 44
%
Foreign rate differential	(0.10%)