v3.26.1
Income Taxes (Details) - USD ($)
$ in Thousands
 12 Months Ended
Jan. 31, 2026
Jan. 31, 2025
Jan. 31, 2024
Jan. 31, 2023
Effective Income Tax Rate Reconciliation [Line Items]        
Income tax expense $ 4,655 $ 2,460 $ 815  
Total deferred tax assets 358,044 297,278 266,659  
Unremitted earnings from foreign subsidiaries 31,000      
Unrecognized tax benefits 13,756 10,207 8,717 $ 6,900
Income tax examination, penalties and interest expense 300 0    
Net deferred tax assets (liabilities) 459 403 306  
Amount of income taxes paid   $ 1,800 $ 200  
Domestic Tax Jurisdiction        
Effective Income Tax Rate Reconciliation [Line Items]        
Net operating loss carryforwards 967,300      
Net operating loss carryforwards, will expire 259,200      
Net operating loss carryforwards, will not expire 708,100      
Domestic Tax Jurisdiction | Research Tax Credit Carryforward        
Effective Income Tax Rate Reconciliation [Line Items]        
Tax credit carryforward 41,900      
State and Local Jurisdiction        
Effective Income Tax Rate Reconciliation [Line Items]        
Net operating loss carryforwards 603,600      
State and Local Jurisdiction | Research Tax Credit Carryforward        
Effective Income Tax Rate Reconciliation [Line Items]        
Tax credit carryforward 24,400      
Foreign Plan        
Effective Income Tax Rate Reconciliation [Line Items]        
Net operating loss carryforwards $ 2,100