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Pension And Other Postretirement Benefit Plans (Fair Values Of Assets Under Fair Value Hierarchy) (Details) (USD $) In Thousands, unless otherwise specified | Mar. 31, 2014 | Mar. 31, 2013
--- | --- | ---
Defined Benefit Plan Disclosure [Line Items] |  |
Total investments | $ 213,282 | $ 205,942
Equity Securities [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total investments | 93,229 | 107,164
Fixed Income Securities [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total investments | 100,120 | 79,288
Alternative Investments [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total investments | 19,933 | 19,490
Level 1 [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total investments | 173,796 | 168,717
Level 1 [Member] | Equity Securities [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total investments | 93,229 | 107,164
Level 1 [Member] | Fixed Income Securities [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total investments | 80,567 | 61,553
Level 1 [Member] | Alternative Investments [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total investments | 0 | 0
Level 2 [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total investments | 8,287 | 10,300
Level 2 [Member] | Equity Securities [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total investments | 0 | 0
Level 2 [Member] | Fixed Income Securities [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total investments | 8,287 | 10,300
Level 2 [Member] | Alternative Investments [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total investments | 0 | 0
Level 3 [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total investments | 31,199 | 26,925
Level 3 [Member] | Equity Securities [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total investments | 0 | 0
Level 3 [Member] | Fixed Income Securities [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total investments | 11,266 | 7,435
Level 3 [Member] | Alternative Investments [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total investments | $ 19,933 | $ 19,490

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- Definition Assets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets. + References Reference 1: 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=28361610&loc=d3e1928-114920 Reference 2: 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=29635418&loc=d3e12355-114930 + Details
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