Note 8 - Accounts Payable and Accrued Expenses (Details) - USD ($)	Oct. 31, 2017	Apr. 30, 2017
Details
Commission payable	$ 190,907	$ 133,712
General liability, worker's compensation, and medical insurance payable	500,849	465,505
Consulting fee payable	199,058	266,852
Union and education fees payable	291,499	280,404
Interest payables for short-term loans	393,284	213,153
Advanced from the employees	249,223	172,435
Other miscellaneous payables	$ 2,335	$ 2,959