OPERATING LEASES NARRATIVE (DETAILS) - USD ($)	12 Months Ended
May 31, 2016	May 31, 2015
OPERATING LEASES NARRATIVE DETAILS
Rental expense	$ 152,000	$ 152,000

Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line

No definition available.

Name:	fil_RentalExpense
Namespace Prefix:	fil_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration