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Loss Per Share and Stockholders' Equity (Tables) | 3 Months Ended
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Jul. 31, 2017
Earnings Per Share [Abstract] |
Computations Of Basic And Diluted Earnings Per Share | The computations of basic and diluted loss per share from continuing operations are as follows:
(in 000s, except per share amounts) |
Three months ended July 31, |  | 2017 |  |  | 2016 |
Net loss from continuing operations attributable to shareholders |  | $ | (127,818 | ) |  | $ | (121,026 | )
Amounts allocated to participating securities |  | (160 | ) |  | (124 | )
Net loss from continuing operations attributable to common shareholders |  | $ | (127,978 | ) |  | $ | (121,150 | )
Basic weighted average common shares |  | 207,935 |  |  | 220,484 |
Potential dilutive shares |  | — |  |  | — |
Dilutive weighted average common shares |  | 207,935 |  |  | 220,484 |
Loss per share from continuing operations attributable to common shareholders:
Basic |  | $ | (0.62 | ) |  | $ | (0.55 | )
Diluted |  | (0.62 | ) |  | (0.55 | )

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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