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Earnings (Loss) Per Share (Tables) | 12 Months Ended
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Apr. 30, 2013
Earnings (Net Loss) Per Share [Abstract] |
Computation Of Basic And Diluted Earnings (Net Loss) Per Share |
|  | FISCAL YEARS ENDED APRIL 30
(in thousands, except per share amounts) |  | 2013 |  |  | 2012 |  |  | 2011
Numerator used in basic and diluted earnings (loss) per common share: |  |  |  |  |  |  |  |
Net income (loss) | $ | 9,758 |  | $ | (20,786) |  | $ | (20,018)
Denominator: |  |  |  |  |  |  |  |
Denominator for basic earnings (loss) per common share - |  |  |  |  |  |  |  |
weighted-average shares |  | 14,563 |  |  | 14,344 |  |  | 14,252
Effect of dilutive securities: |  |  |  |  |  |  |  |
Stock options and restricted stock units |  | 270 |  |  | 0 |  |  | 0
Denominator for diluted earnings (loss) per common share - |  |  |  |  |  |  |  |
weighted-average shares and assumed conversions |  | 14,833 |  |  | 14,344 |  |  | 14,252
Net earnings (loss) per share |  |  |  |  |  |  |  |
Basic | $ | 0.67 |  | $ | (1.45) |  | $ | (1.40)
Diluted | $ | 0.66 |  | $ | (1.45) |  | $ | (1.40)

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations. + References No definition available. + Details
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