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Credit Concentration (Tables) | 12 Months Ended
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Apr. 30, 2015
Risks and Uncertainties [Abstract] |
Summary Of Percentage Of Sales | The following table summarizes the percentage of sales to the Company's two largest customers for the last three fiscal years:
| PERCENT OF ANNUAL GROSS SALES
| 2015 |  | 2014 |  | 2013
Customer A | 26.5% |  | 28.6% |  | 35.7%
Customer B | 18.6% |  | 20.6% |  | 22.8%

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