13. Segment Information: Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area (Details) - USD ($)	9 Months Ended
	May 31, 2017	May 31, 2016
Details
Sales to customers in excess of 10% of total sales	$ 34,483,170	$ 34,666,374
Canada sales	1,425,525	1,051,116
Mexico/Latin America sales	636,954	1,774,158
Middle East Sales		11,686
Europe sales	16,330
Asia/Pacific sales	$ 77,344	$ 85,020