Items (Details) - USD ($)	3 Months Ended	9 Months Ended
Jan. 31, 2018	Jan. 31, 2017	Jan. 31, 2018	Jan. 31, 2017
Details
Interest expense related to loans	$ 126,138	$ 62,169	$ 316,578	$ 174,414

Represents the monetary amount of Interest expense related to loans, during the indicated time period.

No definition available.

Name:	fil_InterestExpenseRelatedToLoans
Namespace Prefix:	fil_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration