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Retirement Plans - Net Periodic Pension Costs (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019
United States Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 0	$ 0	$ 0
Interest cost	533	616	631
Expected return on plan assets	(272)	(448)	(514)
Amortization and deferral	476	188	184
Net periodic benefit cost	737	356	301
International Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	993	906	997
Interest cost	1,388	1,485	1,831
Expected return on plan assets	(1,899)	(2,136)	(2,151)
Amortization and deferral	1,053	910	1,520
Net periodic benefit cost	$ 1,535	$ 1,165	$ 2,197

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- Definition

Amount of gain (loss) recognized in net periodic benefit (cost) credit of defined benefit plan.

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Amount of expected return (loss) recognized in net periodic benefit (cost) credit, calculated based on expected long-term rate of return and market-related value of plan assets of defined benefit plan.

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