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Income Taxes (Schedule Of Significant Components Of Deferred Tax Assets And Liabilities) (Details) - USD ($) $ in Thousands | Apr. 30, 2015 | Apr. 30, 2014
--- | --- | ---
Deferred tax assets: |  |
Pension benefits | $ 23,074 | $ 15,381
Accounts receivable | 5,523 | 4,603
Product liability | 1,031 | 745
Employee benefits | 7,429 | 8,523
Net operating loss carryforward | 0 | 469
Other | 266 | 199
Total | 37,323 | 29,920
Deferred tax liabilities: |  |
Inventory | 451 | 496
Depreciation | 3,485 | 2,374
Total | 3,936 | 2,870
Net deferred tax asset | $ 33,387 | $ 27,050

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- Definition Amount of deferred tax liability attributable to taxable temporary differences. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Deferred Tax Liability -URI http://asc.fasb.org/extlink&oid=6510232 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 15 -Subparagraph b(2) -Article 7 + Details
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