Pension And Other Postretirement Benefit Plans (Estimated Future Benefit Payments) (Details) $ in Thousands	Mar. 31, 2019 USD ($)
Pension Benefits [Member]
2020	$ 15,950
2021	17,355
2022	16,910
2023	23,639
2024	18,017
2025 - 2029	92,458
Other Postretirement Benefits [Member]
2020	2,652
2021	2,551
2022	2,433
2023	2,349
2024	2,267
2025 - 2029	$ 10,315

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

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920

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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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