Retirement Plans - Summary of Accumulated Benefit Obligation Related to All Defined Pension Plans (Detail) - USD ($) $ in Thousands	Mar. 31, 2017	Mar. 31, 2016
United States Plans
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation	$ 16,682	$ 17,649
Accumulated benefit obligation	16,682	17,649
Fair value of plan assets	12,731	11,839
International Plans
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation	73,920	69,134
Accumulated benefit obligation	70,801	65,732
Fair value of plan assets	33,719	32,314
Unfunded Defined Benefit Plan \| United States Plans
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation	0	0
Accumulated benefit obligation	0	0
Unfunded Defined Benefit Plan \| International Plans
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation	28,623	30,272
Accumulated benefit obligation	27,220	28,875
Defined Benefit Plans With An Accumulated Benefit Obligation In Excess Of The Fair Value Of Plan Assets \| United States Plans
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation	16,682	17,649
Accumulated benefit obligation	16,682	17,649
Fair value of plan assets	12,731	11,839
Defined Benefit Plans With An Accumulated Benefit Obligation In Excess Of The Fair Value Of Plan Assets \| International Plans
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation	73,920	69,134
Accumulated benefit obligation	70,281	65,732
Fair value of plan assets	$ 33,719	$ 32,314

For defined benefit pension plans, the actuarial present value of benefits (whether vested or nonvested) attributed by the pension benefit formula to employee service rendered before a specified date and based on employee service and compensation (if applicable) before that date. The accumulated benefit obligation differs from the projected benefit obligation in that it includes no assumption about future compensation levels. For plans with flat-benefit or nonpay-related pension benefit formulas, the accumulated benefit obligation and the projected benefit obligation are the same.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Accumulated Benefit Obligation
-URI http://asc.fasb.org/extlink&oid=6503844

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920

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- Definition

If aggregate disclosures are presented, the aggregate pension accumulated benefit obligation for pension plans with accumulated benefit obligations in excess of plan assets as of the measurement date of each statement of financial position presented.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 55
-Paragraph 17
-URI http://asc.fasb.org/extlink&oid=73719040&loc=d3e4179-114921

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e2417-114920

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If aggregate disclosures are presented, the aggregate fair value of plan assets for pension plans with accumulated benefit obligations in excess of plan assets as of the measurement date of each statement of financial position presented.

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- Definition

If aggregate disclosures are presented, the aggregate projected benefit obligation for pension plans with accumulated benefit obligations in excess of plan assets as of the measurement date of each statement of financial position presented.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e2417-114920

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 55
-Paragraph 17
-URI http://asc.fasb.org/extlink&oid=73719040&loc=d3e4179-114921

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