v3.25.4
Fair value of financial assets and liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2025
Mar. 31, 2025
Fair value of financial assets and liabilities    
Cash equivalents $ 31,977 $ 89,879
Short-term investments 178,163 462,564
US Government Agency bonds    
Fair value of financial assets and liabilities    
Short-term investments 20,009 84,804
US Treasury bonds    
Fair value of financial assets and liabilities    
Short-term investments 126,177 287,881
Level 1    
Fair value of financial assets and liabilities    
Cash equivalents 0 0
Short-term investments 0 0
Level 1 | US Government Agency bonds    
Fair value of financial assets and liabilities    
Short-term investments 0 0
Level 1 | US Treasury bonds    
Fair value of financial assets and liabilities    
Short-term investments 0 0
Level 2    
Fair value of financial assets and liabilities    
Cash equivalents 31,977 89,879
Short-term investments 178,163 462,564
Level 2 | US Government Agency bonds    
Fair value of financial assets and liabilities    
Short-term investments 20,009 84,804
Level 2 | US Treasury bonds    
Fair value of financial assets and liabilities    
Short-term investments 126,177 287,881
Level 3    
Fair value of financial assets and liabilities    
Cash equivalents 0 0
Short-term investments 0 0
Level 3 | US Government Agency bonds    
Fair value of financial assets and liabilities    
Short-term investments 0 0
Level 3 | US Treasury bonds    
Fair value of financial assets and liabilities    
Short-term investments $ 0 $ 0