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Retirement Benefit Plan (Details Narrative) - USD ($)
12 Months Ended
Apr. 30, 2017
Apr. 30, 2016
Retirement Benefit Plan Details Narrative    
Description of employees eligibility Employees are eligible to participate in the Plan when they have attained the age of 21 and completed one thousand hours of service in any plan year with the Company.  
Employer matching contribution vesting period 6 years  
Employees vesting percentage 100.00%  
Employees matching contributions $ 10,000 $ 10,000