XML 71 R62.htm IDEA: XBRL DOCUMENT v3.10.0.1
12. Segment Information (Details) - USD ($)
 6 Months Ended 9 Months Ended
Feb. 28, 2017
May 31, 2018
Details    
Sales to customers in excess of 10% of total sales $ 18,011,073 $ 23,678,847
United States sales 34,483,170 41,148,757
Canada sales 1,425,525 1,139,399
Mexico/Latin America sales 636,954 192,539
Middle East sales   12,209
Europe sales 16,330 27,095
Asia/Pacific sales $ 77,344 $ 170,018