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Retirement Plans - Summary Changes in Plan Assets and Benefit Obligations (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Mar. 31, 2023
Changes in plan assets and benefit obligations:      
New prior service cost $ 0 $ 0 $ 0
Net loss (gain) arising during the year 228 7,439 (10,352)
Effect of exchange rates on amounts included in AOCI 260 127 (957)
Amounts recognized as a component of net periodic benefit costs:      
Amortization of prior service cost $ 42 42 41
Defined Benefit Plan Net Periodic Benefit Cost Credit Curtailment Gain Loss Statement Of Income Or Comprehensive Income Extensible List Not Disclosed Flag Amortization of prior service cost    
Amortization or settlement recognition of net loss $ 1,069 (284) (438)
Defined Benefit Plan Net Periodic Benefit Cost Credit Settlement Gain Loss Statement Of Income Or Comprehensive Income Extensible List Not Disclosed Flag Amortization or settlement recognition of net loss    
Total recognized in other comprehensive (income) loss $ 1,515 $ 7,240 $ (11,788)