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Concentration of Risk (Tables) | 3 Months Ended
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Jul. 31, 2019
Risks and Uncertainties [Abstract] |
Summary Of Percentage Of Sales | The following table summarizes the percentage of net sales attributable to the Company's two largest customers for the three-months ended July 31, 2019 and 2018:
| Three Months Ended
| July 31,
| 2019 |  | 2018
Customer A | 28.8% |  | 29.1%
Customer B | 17.7% |  | 18.7%

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