v3.26.1
Income Taxes - Schedule of Effective Income Tax Rate Reconciliation (Details) - USD ($)
$ in Thousands
12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Mar. 31, 2024
Amount      
Income taxes at statutory rate $ 52,443 $ 55,350 $ 38,893
State and local income taxes, net of federal income tax effect 8,528 12,831 12,130
Foreign tax effects 1,787    
Research and development tax credits (3,663) (6,439) (3,817)
Investment tax credits (843)    
Change in valuation allowance (39) 25 (4,060)
Section 162(m) limitation 7,711 19,872 3,410
Stock-based compensation (12,405) (37,634) (6,734)
Other nontaxable or nondeductible items 487    
Changes in unrecognized tax benefits (52)    
Transferable federal tax credits   (1,305) (1,920)
Other   (2,311) (282)
Provision for income taxes $ 53,954 $ 40,389 $ 37,620
Percent      
Income taxes at statutory rate 21.00%    
State and local income taxes, net of federal income tax effect 3.40%    
Foreign tax effects 0.70%    
Research and development tax credits (1.50%)    
Investment tax credits (0.30%)    
Change in valuation allowance 0.00%    
Section 162(m) limitation 3.10%    
Stock-based compensation (5.00%)    
Other nontaxable or nondeductible items 0.20%    
Changes in unrecognized tax benefits 0.00%    
Total 21.60%