v3.26.1
Income Taxes (Reconciliation of Effective Tax Rate) (Details) - USD ($)
$ in Thousands
12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Mar. 31, 2024
Amount      
Income tax provision at statutory rate $ 54,074 $ 59,680 $ 57,965
State income taxes provision, net of federal income tax benefit 11,526 10,187 6,004
Foreign tax provision   4,691 3,164
Effect of cross-border tax laws:      
Global intangible low taxed income 211    
Foreign derived intangible income (1,032)    
Subpart F 130    
Tax credits:      
Research and development (736) (600) (700)
Foreign tax credit   (622) (889)
Nontaxable or nondeductible items:      
Compensation limitations 1,229 1,312 1,910
Stock compensation (149)    
Changes in unrecognized tax liabilities 241 (3,694) 390
Other 208 (1,370) (1,158)
Total provision for income taxes $ 67,195 $ 69,584 $ 66,686
Percent      
Income tax provision at statutory rate 21.00% 21.00% 21.00%
State income taxes provision, net of federal income tax benefit 4.50% 3.60% 2.20%
Foreign tax provision   1.70% 1.10%
Effect of cross-border tax laws:      
Global intangible low taxed income 0.10%    
Foreign derived intangible income (0.40%)    
Subpart F 0.10%    
Tax credits:      
Research and development (0.30%) (0.20%) (0.30%)
Foreign tax credit   (0.20%) (0.30%)
Nontaxable or nondeductible items:      
Compensation limitations 0.50% 0.50% 0.70%
Stock compensation (0.10%)    
Changes in unrecognized tax liabilities 0.10% (1.30%) 0.10%
Other 0.10% (0.60%) (0.30%)
Total provision for income taxes 26.10% 24.50% 24.20%
Australia      
Amount      
Foreign tax provision $ 2,457    
Percent      
Foreign tax provision 1.00%    
Other foreign      
Amount      
Foreign tax provision $ (964)    
Percent      
Foreign tax provision (0.50%)