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Note 12 - Segment and Geographic Information - Total Long-lived Assets by Geographic Distribution (Details) - USD ($)
Aug. 31, 2017
Aug. 31, 2016
Total long-lived assets $ 7,359,662 $ 8,554,469
CHINA    
Total long-lived assets 228,458 253,931
BRAZIL    
Total long-lived assets 54,646 66,938
GERMANY    
Total long-lived assets 14,171
INDIA    
Total long-lived assets 14,712 13,645
UNITED STATES    
Total long-lived assets $ 7,047,675 $ 8,219,955