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Pension Plans - Reconciliation of Funded Status (Detail) - USD ($) $ in Thousands	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Pension benefit obligation, end of year	$ 29,555	$ 22,648	$ 18,789
Fair value of plan assets, end of year	24,778	15,751	$ 12,436
Net funding obligation, end of year	$ (4,777)	$ (6,897)

Amount of asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee.

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