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Retirement Plans - Summary of Pension Plan Investments Measured at Fair Value (Detail) - USD ($) $ in Thousands | Mar. 31, 2021 | Mar. 31, 2020 | Mar. 31, 2019
--- | --- | --- | ---
United States Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total Fair Value Measurement | $ 16,265 | $ 12,036 | $ 13,763
International Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total Fair Value Measurement | 42,844 | 32,831 | $ 36,791
Quoted Price In Active Markets for Identical Assets (Level 1) | United States Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total Fair Value Measurement | 16,265 | 12,036 |
Quoted Price In Active Markets for Identical Assets (Level 1) | International Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total Fair Value Measurement | 81 | 141 |
Significant Other Observable Inputs (Level 2) | United States Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total Fair Value Measurement | 0 | 0 |
Significant Other Observable Inputs (Level 2) | International Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total Fair Value Measurement | 42,763 | 32,690 |
Significant Unobservable Inputs (Level 3) | United States Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total Fair Value Measurement | 0 | 0 |
Significant Unobservable Inputs (Level 3) | International Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total Fair Value Measurement | 0 | 0 |
Cash and Cash Equivalents | United States Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total Fair Value Measurement | 1,454 | 1,221 |
Cash and Cash Equivalents | International Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total Fair Value Measurement | 81 | 141 |
Cash and Cash Equivalents | Quoted Price In Active Markets for Identical Assets (Level 1) | United States Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total Fair Value Measurement | 1,454 | 1,221 |
Cash and Cash Equivalents | Quoted Price In Active Markets for Identical Assets (Level 1) | International Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total Fair Value Measurement | 81 | 141 |
Cash and Cash Equivalents | Significant Other Observable Inputs (Level 2) | United States Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total Fair Value Measurement | 0 | 0 |
Cash and Cash Equivalents | Significant Other Observable Inputs (Level 2) | International Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total Fair Value Measurement | 0 | 0 |
Cash and Cash Equivalents | Significant Unobservable Inputs (Level 3) | United States Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total Fair Value Measurement | 0 | 0 |
Cash and Cash Equivalents | Significant Unobservable Inputs (Level 3) | International Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total Fair Value Measurement | 0 | 0 |
US Equity Securities | United States Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total Fair Value Measurement | 10,435 | 6,860 |
US Equity Securities | Quoted Price In Active Markets for Identical Assets (Level 1) | United States Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total Fair Value Measurement | 10,435 | 6,860 |
US Equity Securities | Significant Other Observable Inputs (Level 2) | United States Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total Fair Value Measurement | 0 | 0 |
US Equity Securities | Significant Unobservable Inputs (Level 3) | United States Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total Fair Value Measurement | 0 | 0 |
International Equity Securities | International Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total Fair Value Measurement | 28,144 | 20,059 |
International Equity Securities | Quoted Price In Active Markets for Identical Assets (Level 1) | International Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total Fair Value Measurement | 0 | 0 |
International Equity Securities | Significant Other Observable Inputs (Level 2) | International Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total Fair Value Measurement | 28,144 | 20,059 |
International Equity Securities | Significant Unobservable Inputs (Level 3) | International Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total Fair Value Measurement | 0 | 0 |
Fixed Income Funds | United States Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total Fair Value Measurement | 4,376 | 3,955 |
Fixed Income Funds | International Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total Fair Value Measurement | 14,619 | 12,631 |
Fixed Income Funds | Quoted Price In Active Markets for Identical Assets (Level 1) | United States Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total Fair Value Measurement | 4,376 | 3,955 |
Fixed Income Funds | Quoted Price In Active Markets for Identical Assets (Level 1) | International Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total Fair Value Measurement | 0 | 0 |
Fixed Income Funds | Significant Other Observable Inputs (Level 2) | United States Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total Fair Value Measurement | 0 | 0 |
Fixed Income Funds | Significant Other Observable Inputs (Level 2) | International Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total Fair Value Measurement | 14,619 | 12,631 |
Fixed Income Funds | Significant Unobservable Inputs (Level 3) | United States Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total Fair Value Measurement | 0 | 0 |
Fixed Income Funds | Significant Unobservable Inputs (Level 3) | International Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total Fair Value Measurement | $ 0 | $ 0 |

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