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Credit Concentration (Tables)
 12 Months Ended
Apr. 30, 2016
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
 
2016

2015

2014
Customer A
23.9%

26.5%

28.6%
Customer B
17.2%

18.6%

20.6%