v3.26.1
Income taxes - Narrative (Details) - USD ($)
$ in Thousands
 12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Operating Loss Carryforwards [Line Items]    
Income tax (benefit) provision $ (551) $ 468
Domestic Tax Jurisdiction    
Operating Loss Carryforwards [Line Items]    
Operating loss carryforwards 62,700  
Research and development credit carryforwards 21,000  
State and Local Jurisdiction    
Operating Loss Carryforwards [Line Items]    
Operating loss carryforwards 102,400  
Research and development credit carryforwards 9,000  
Foreign Tax Authority    
Operating Loss Carryforwards [Line Items]    
Operating loss carryforwards $ 987,200