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Note 11 - Segment and Geographic Information - Total Long-lived Assets by Geographic Distribution (Details) - USD ($)
May 31, 2018
Aug. 31, 2017
Property and equipment $ 7,233,307 $ 7,359,662
CHINA    
Property and equipment 251,848 228,458
BRAZIL    
Property and equipment 81,161 54,646
GERMANY    
Property and equipment 10,155 14,171
INDIA    
Property and equipment 21,628 14,712
UNITED STATES    
Property and equipment $ 6,868,515 $ 7,047,675