v3.26.1
Income Taxes - Additional Information (Detail) - USD ($)
 12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Mar. 31, 2024
Mar. 31, 2023
Income Tax Contingency [Line Items]        
Net operating loss carryforwards carried forward indefinitely $ 126,150,000      
Net operating loss carryforwards subject to expiration 48,983,000      
Valuation allowance 34,223,000 $ 25,594,000 $ 35,754,000 $ 31,172,000
Increase (decrease) in deferred tax asset 741,000 (5,890,000) (2,267,000)  
Income tax expense (benefit) $ 53,849,000 $ 42,842,000 $ 23,089,000  
Effective income tax rates 15.50% 10.50% 7.90%  
Foreign pre-tax income $ 150,685,000 $ 205,245,000 $ 192,955,000  
Tax rate of Swiss subsidiary 16.00% 13.00% 9.00%  
Unrecognized tax benefits $ 2,400,000 $ 2,880,000 $ 2,845,000 $ 3,495,000
Tax related interest and penalties 390,000 455,000    
Swiss Federal Tax Administration (FTA)        
Income Tax Contingency [Line Items]        
Income tax expense (benefit) 5,897,000 2,500,000    
Federal        
Income Tax Contingency [Line Items]        
United States federal net operating loss carryforwards 179,000      
Valuation allowance 0 0    
Foreign        
Income Tax Contingency [Line Items]        
United States federal net operating loss carryforwards 175,133,000      
Valuation allowance 33,755,000 $ 25,126,000    
Increase (decrease) in deferred tax asset $ 8,629,000      
Effective income tax rates 24.20% 0.10% 13.80%  
Foreign | Increase to Income Tax Expense (Benefit)        
Income Tax Contingency [Line Items]        
Increase (decrease) in deferred tax asset $ 7,888,000      
Foreign | Purchase Accounting Adjustment        
Income Tax Contingency [Line Items]        
Increase (decrease) in deferred tax asset 741,000      
State        
Income Tax Contingency [Line Items]        
United States federal net operating loss carryforwards 17,085,000      
Valuation allowance $ 468,000 $ 468,000