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Concentration of Risk (Tables) | 9 Months Ended
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Jan. 31, 2019
Risks and Uncertainties [Abstract] |
Summary Of Percentage Of Sales | The following table summarizes the percentage of net sales to the Company's two largest customers for the three- and nine-months ended January 31, 2019 and 2018:
| Three Months Ended |  | Nine Months Ended
| January 31, |  | January 31,
| 2019 |  | 2018 |  | 2019 |  | 2018
Customer A | 29.3 |  | 24.9 |  | 29.0 |  | 20.1
Customer B | 19.2 |  | 14.6 |  | 18.4 |  | 13.7

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