Retirement Plans - Summary of Pension Plan Investments Measured at Fair Value (Detail) - USD ($) $ in Thousands	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
United States Plans
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value Measurement	$ 12,036	$ 13,763	$ 13,928
United States Plans | Quoted Price In Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value Measurement	12,036	13,763
United States Plans | Cash and Cash Equivalents
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value Measurement	1,221	1,080
United States Plans | Cash and Cash Equivalents | Quoted Price In Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value Measurement	1,221	1,080
United States Plans | US Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value Measurement	6,860	8,275
United States Plans | US Equity Securities | Quoted Price In Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value Measurement	6,860	8,275
United States Plans | International Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value Measurement	0	0
United States Plans | International Equity Securities | Quoted Price In Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value Measurement	0	0
United States Plans | Fixed Income Funds
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value Measurement	3,955	4,408
United States Plans | Fixed Income Funds | Quoted Price In Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value Measurement	3,955	4,408
International Plans
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value Measurement	32,831	36,791	$ 38,757
International Plans | Quoted Price In Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value Measurement	141	83
International Plans | Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value Measurement	32,690	36,708
International Plans | Cash and Cash Equivalents
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value Measurement	141	83
International Plans | Cash and Cash Equivalents | Quoted Price In Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value Measurement	141	83
International Plans | International Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value Measurement	20,059	23,875
International Plans | International Equity Securities | Quoted Price In Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value Measurement	0
International Plans | International Equity Securities | Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value Measurement	20,059	23,875
International Plans | Fixed Income Funds
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value Measurement	12,631	12,833
International Plans | Fixed Income Funds | Quoted Price In Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value Measurement	0
International Plans | Fixed Income Funds | Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Total Fair Value Measurement	$ 12,631	$ 12,833