v3.7.0.1

Retirement Plans - Summary of Pension Plan Investments Measured at Fair Value (Detail) - USD ($) $ in Thousands | Mar. 31, 2017 | Mar. 31, 2016 | Mar. 31, 2015
--- | --- | --- | ---
United States Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total Fair Value Measurement | $ 12,731 | $ 11,839 | $ 12,379
United States Plans | Quoted Price In Active Markets for Identical Assets (Level 1) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total Fair Value Measurement | 12,731 | 11,839 |
United States Plans | Cash and Cash Equivalents |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total Fair Value Measurement | 305 | 928 |
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 | 305 | 928 |
United States Plans | US Equity Securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total Fair Value Measurement | 8,363 | 7,324 |
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 | 8,363 | 7,324 |
United States Plans | International Equity Securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total Fair Value Measurement | 1,050 | 1,015 |
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 | 1,050 | 1,015 |
United States Plans | Fixed Income Funds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total Fair Value Measurement | 3,013 | 2,572 |
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 | 3,013 | 2,572 |
International Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total Fair Value Measurement | 34,323 | 32,314 | $ 34,401
International Plans | Quoted Price In Active Markets for Identical Assets (Level 1) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total Fair Value Measurement | 88 | 0 |
International Plans | Significant Other Observable Inputs (Level 2) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total Fair Value Measurement | 34,235 | 32,314 |
International Plans | Cash and Cash Equivalents |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total Fair Value Measurement | 88 |  |
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 | 88 |  |
International Plans | International Equity Securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total Fair Value Measurement | 22,727 | 21,439 |
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 | 0 |
International Plans | International Equity Securities | Significant Other Observable Inputs (Level 2) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total Fair Value Measurement | 22,727 | 21,439 |
International Plans | Fixed Income Funds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total Fair Value Measurement | 11,508 | 10,875 |
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 | 0 |
International Plans | Fixed Income Funds | Significant Other Observable Inputs (Level 2) |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total Fair Value Measurement | $ 11,508 | $ 10,875 |

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- Definition Fair value of assets that have been segregated and restricted to provide pension or postretirement benefits. Assets include, but are not limited to, stocks, bonds, other investments, earnings from investments, and contributions by the employer and employees. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 30 -Section 35 -Paragraph 50 -URI http://asc.fasb.org/extlink&oid=64937038&loc=d3e12355-114930 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Plan Assets -URI http://asc.fasb.org/extlink&oid=6749337 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Plan Assets -URI http://asc.fasb.org/extlink&oid=6520858 + Details
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