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Calculation of Estimated Loss on Disposal of Discontinued Operations (Detail) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Apr. 30, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |
Estimated cash proceeds | $ 30,500
Basis in net assets sold as of April 30, 2014 | 39,316
Estimated costs incurred directly attributable to the transaction | 658
Estimated loss before income taxes | (9,474)
Estimated income tax benefit | (282)
Estimated loss on disposal of discontinued operations, net of taxes | $ (9,192)

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- Definition Represents the sum of the carrying value of all the Assets Held-for-Sale at the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6360339&loc=d3e1361-107760 + Details
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