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

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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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

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