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Quarterly Financial Information (Tables) | 12 Months Ended
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Apr. 30, 2013
Summary of Quarterly Financial Information | The following is a summary of certain items in the consolidated statements of operations by quarter for fiscal years ended April 30, 2013, 2012 and 2011. The impact of the discontinued operations described in Note 18 is included in all periods in the table below.
Fiscal Year 2013 |  | First Quarter |  |  | Second Quarter |  |  | Third Quarter |  |  | Fourth Quarter |
Revenues |  | $ | 117,638 |  |  | $ | 116,836 |  |  | $ | 112,167 |  |  | $ | 108,694 |
Operating income |  | $ | 5,807 |  |  | $ | 4,426 |  |  | $ | 78 |  |  | $ | 2,110 |
Loss from continuing operations before discontinued operations |  | $ | (8,163) |  |  | $ | (20,857) |  |  | $ | (11,146) |  |  | $ | (9,817) |
Net loss attributable to common stockholders |  | $ | (8,371) |  |  | $ | (20,967) |  |  | $ | (11,407) |  |  | $ | (13,397) |
Loss per common share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic and diluted: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss from continuing operations before discontinued operations |  | $ | (0.30) |  |  | $ | (0.68) |  |  | $ | (0.28) |  |  | $ | (0.25) |
Net loss attributable to common stockholders |  | $ | (0.31) |  |  | $ | (0.68) |  |  | $ | (0.29) |  |  | $ | (0.34) |
Diluted: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss from continuing operations before discontinued operations |  | $ | (0.30) |  |  | $ | (0.68) |  |  | $ | (0.28) |  |  | $ | (0.25) |
Net loss attributable to common stockholders |  | $ | (0.31) |  |  | $ | (0.68) |  |  | $ | (0.29) |  |  | $ | (0.34) |
Fiscal Year 2012 |  | First Quarter |  |  | Second Quarter |  |  | Third Quarter |  |  | Fourth Quarter |
Revenues |  | $ | 124,066 |  |  | $ | 125,989 |  |  | $ | 111,520 |  |  | $ | 106,375 |
Operating income (loss) |  | $ | 10,468 |  |  | $ | 11,730 |  |  | $ | 4,448 |  |  | $ | (37,679) |
Loss from continuing operations before discontinued operations |  | $ | (3,502) |  |  | $ | (693) |  |  | $ | (24,517) |  |  | $ | (48,991) |
Net loss attributable to common stockholders |  | $ | (3,062) |  |  | $ | (765) |  |  | $ | (24,635) |  |  | $ | (49,124) |
Loss per common share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss from continuing operations before discontinued operations |  | $ | (0.13) |  |  | $ | (0.03) |  |  | $ | (0.91) |  |  | $ | (1.82) |
Net loss attributable to common stockholders |  | $ | (0.12) |  |  | $ | (0.03) |  |  | $ | (0.92) |  |  | $ | (1.83) |
Diluted: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss from continuing operations before discontinued operations |  | $ | (0.13) |  |  | $ | (0.03) |  |  | $ | (0.91) |  |  | $ | (1.82) |
Net loss attributable to common stockholders |  | $ | (0.12) |  |  | $ | (0.03) |  |  | $ | (0.92) |  |  | $ | (1.83) |
Fiscal Year 2011 |  | First Quarter |  |  | Second Quarter |  |  | Third Quarter |  |  | Fourth Quarter |
Revenues |  | $ | 119,143 |  |  | $ | 119,694 |  |  | $ | 109,076 |  |  | $ | 106,772 |
Operating income (loss) |  | $ | 12,918 |  |  | $ | 12,263 |  |  | $ | 6,571 |  |  | $ | (2,324) |
(Loss) income from continuing operations before discontinued operations |  | $ | (1,587) |  |  | $ | 258 |  |  | $ | (6,003) |  |  | $ | 4,368 |
Net (loss) income attributable to common stockholders |  | $ | (2,902) |  |  | $ | (1,154) |  |  | $ | (6,365) |  |  | $ | 48,849 |
Loss per common share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic and diluted: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
(Loss) income from continuing operations before discontinued operations |  | $ | (0.06) |  |  | $ | 0.01 |  |  | $ | (0.23) |  |  | $ | 0.17 |
Net (loss) income attributable to common stockholders |  | $ | (0.11) |  |  | $ | (0.04) |  |  | $ | (0.24) |  |  | $ | 1.85 |
Diluted: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
(Loss) income from continuing operations before discontinued operations |  | $ | (0.07) |  |  | $ | 0.01 |  |  | $ | (0.24) |  |  | $ | 0.17 |
Net (loss) income attributable to common stockholders |  | $ | (0.11) |  |  | $ | (0.04) |  |  | $ | (0.24) |  |  | $ | 1.85 |

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- Definition Tabular disclosure of the quarterly financial data in the annual financial statements. The disclosure includes financial information for each fiscal quarter for the current and previous year, including revenues, gross profit, income (loss) before extraordinary items and cumulative effect of a change in accounting principle and earnings per share data. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a)-(j) -URI http://asc.fasb.org/extlink&oid=20225539&loc=d3e1280-108306 + Details
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