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Retirement Benefit Plan (Details Narrative) - USD ($)
3 Months Ended 9 Months Ended
Jan. 01, 1998
Jan. 31, 2022
Jan. 31, 2021
Jan. 31, 2022
Jan. 31, 2021
Retirement Benefits [Abstract]          
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.  
Employees vesting percentage 100.00%        
Employer matching contribution vesting period six-year        
Employees matching contributions   $ 16,000 $ 16,000 $ 48,000 $ 46,000