v3.26.1
Income taxes - Summary of Reconciliation of the Income Tax (Details) - USD ($)
$ in Thousands
12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Mar. 31, 2024
Amount      
U.S. federal tax at statutory rate $ 149,903 $ 136,083 $ 127,679
State and local income taxes, net of federal income tax effect 5,710 15,314 7,810
Other foreign jurisdictions   1,682 2,165
Foreign-derived intangible income (15,208) (20,747) (9,055)
Tax credits (9,180)    
Stock-based compensation expense 6,117 7,097 0
Other (56)    
Provision for income taxes $ 127,943 $ 130,770 $ 111,782
Percent      
U.S. federal tax at statutory rate 21.00%    
State and local income taxes, net of federal income tax effect 0.80%    
Foreign-derived intangible income (2.10%)    
Tax credits (1.30%)    
Stock-based compensation expense 0.90%    
Other 0.00%    
Total provision for income taxes and effective tax rate 17.90%    
Excess tax benefits on vested and exercised awards $ 8,700    
Spain      
Amount      
Transfer pricing adjustment (13,680)    
Other $ 5,380    
Percent      
Transfer pricing adjustment (1.90%)    
Other 0.80%    
Other foreign jurisdictions      
Amount      
Other foreign jurisdictions $ (1,043)    
Percent      
Other foreign jurisdictions (0.10%)