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Concentration of Risk (Tables) | 3 Months Ended
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Jul. 31, 2018
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 three months ended July 31, 2018 and 2017:
| PERCENT OF NET SALES
| Three Months Ended
| July 31,
| 2018 |  | 2017
Customer A | 29.1 |  | 18.4
Customer B | 18.7 |  | 13.9

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