v3.26.1
Income Taxes - Tax Rate Reconciliation Post ASU Adoption (Details) - USD ($)
$ in Thousands
12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Mar. 31, 2024
Amount      
Income tax expense at U.S. federal statutory income tax rate $ 62,950 $ 46,920 $ 32,532
State and local tax expense, net of federal benefits 4,151 7,296 306
Changes in valuation allowance   27,116 13,080
Foreign tax effects   2,129 3,318
Effect of cross-border tax laws      
GILTI, net of credits 26,548    
Impact of foreign branches, net of credits 19,398    
U.S. tax on foreign IP royalties 6,235    
Other (2,416)    
Nontaxable or nondeductible items      
Employee compensation 12,964    
Other 2,374    
Changes in unrecognized tax benefits 3,325    
Other adjustments   3,833 (1,009)
Total income tax (benefit) expense $ 137,092 $ (260,255) $ 283
Percent      
U.S. federal income tax rate 21.00%    
State and local income taxes, net of federal income tax effect 1.40%    
Effect of cross-border tax laws      
GILTI, net of credits 8.80%    
Impact of foreign branches, net of credits 6.50%    
U.S. tax on foreign IP royalties 2.10%    
Other (0.80%)    
Nontaxable or nondeductible items      
Employee compensation 4.30%    
Other 0.80%    
Changes in unrecognized tax benefits 1.10%    
Total income tax expense 45.70%    
Austria      
Amount      
Employee compensation $ (4,893)    
Nontaxable or nondeductible items      
Other adjustments $ (1,465)    
Percent      
Employee compensation (1.60%)    
Nontaxable or nondeductible items      
Other adjustments (0.50%)    
Brazil      
Amount      
Withholding tax $ 4,618    
Nontaxable or nondeductible items      
Other adjustments $ (54)    
Percent      
Withholding tax 1.50%    
Israel      
Amount      
Tax effect of intercompany IP transfer $ 3,304    
Changes in valuation allowance (3,758)    
Nontaxable or nondeductible items      
Other adjustments $ 646    
Percent      
Tax effect of intercompany IP transfer 1.10%    
Changes in valuation allowances (1.30%)    
Nontaxable or nondeductible items      
Other adjustments 0.20%    
Poland      
Amount      
Research and development tax credits $ (4,875)    
Changes in valuation allowance 4,290    
Nontaxable or nondeductible items      
Other adjustments $ (578)    
Percent      
Research and development tax credits (1.60%)    
Changes in valuation allowances 1.40%    
Nontaxable or nondeductible items      
Other adjustments (0.20%)    
Switzerland      
Amount      
Foreign tax effects $ (23,412)    
Cantonal and communal income taxes 6,821    
Nontaxable or nondeductible items      
Other adjustments $ 306    
Percent      
Foreign tax effects (7.80%)    
Cantonal and communal income taxes 2.30%    
Nontaxable or nondeductible items      
Other adjustments 0.10%    
Other foreign jurisdictions      
Amount      
Foreign tax effects $ 18,770    
Percent      
Foreign tax effects 6.30%    
United States      
Nontaxable or nondeductible items      
Other adjustments $ 1,843    
Nontaxable or nondeductible items      
Other adjustments 0.60%