Pension And Other Postretirement Benefit Plans (Estimated Future Benefit Payments) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013
Pension Benefits [Member]
2014	$ 15,967
2015	19,966
2016	17,787
2017	19,699
2018	16,015
2019 - 2023	97,776
Other Postretirement Benefits [Member]
2014	3,371
2015	3,397
2016	3,398
2017	3,409
2018	3,321
2019 - 2023	$ 15,977

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

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (f)

-URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e1928-114920

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- Definition

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

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

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

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

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

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