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Note 13 - Total Net Sales by Geographic Distribution (Details) - USD ($)
12 Months Ended
Aug. 31, 2015
Aug. 31, 2014
Aug. 31, 2013
BRAZIL      
Net sales by segment $ 2,623,938 $ 3,079,695 $ 2,394,486
INDIA      
Net sales by segment 967,241 $ 581,535
CHINA      
Net sales by segment 1,070,422
North America [Member]      
Net sales by segment 25,661,092 $ 23,164,878 $ 20,107,378
Net sales by segment $ 30,322,693 $ 26,826,108 $ 22,501,864