Amount of contribution received by defined benefit plan from employer which increases plan assets.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (d)(5)(ii)
-URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 6
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e2709-114920

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (b)(3)
-URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (d)(5)(iv)(01)
-URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920

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- Definition

Amount of benefits for defined benefit plan expected to be paid in five fiscal years after fifth fiscal year following latest fiscal year.

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Amount of benefits for defined benefit plan expected to be paid in next fiscal year following latest fiscal year.

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Amount of benefits for defined benefit plan expected to be paid in fifth fiscal year following latest fiscal year.

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Amount of benefits for defined benefit plan expected to be paid in fourth fiscal year following latest fiscal year.

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Amount of benefits for defined benefit plan expected to be paid in third fiscal year following latest fiscal year.

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Amount of benefits for defined benefit plan expected to be paid in second fiscal year following latest fiscal year.

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Amount of contributions expected to be received by defined benefit plan from employer in next fiscal year following latest fiscal year.

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Employee Benefits - Cash Flows (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Defined Benefit Plan Disclosure [Line Items]
Estimated future employer contributions in 2017	$ 516
Employer contributions	4,627	$ 4,843	$ 3,978
U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Estimated future employer contributions in 2017	3,586
Employer contributions	3,607	2,902
Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Estimated future employer contributions in 2017	3,144
Employer contributions	2,103	2,868
Pension Plan \| U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
2019	9,203
2020	7,281
2021	6,779
2022	6,910
2023	6,617
Years 2024-2028	30,401
Pension Plan \| Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
2019	3,625
2020	2,669
2021	3,083
2022	2,824
2023	3,058
Years 2024-2028	16,795
Postretirement Benefits Plan \| U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
2019	337
2020	316
2021	317
2022	273
2023	273
Years 2024-2028	1,329
Employer contributions	356	347
Postretirement Benefits Plan \| Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
2019	139
2020	148
2021	148
2022	148
2023	148
Years 2024-2028	739
Employer contributions	$ 126	$ 102