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Note 12 - Total Net Sales by Geographic Distribution (Details) - USD ($)
3 Months Ended 9 Months Ended
May 31, 2016
May 31, 2015
May 31, 2016
May 31, 2015
BRAZIL        
Net sales by segment     $ 1,509,659 $ 2,103,589
INDIA        
Net sales by segment     911,227 708,635
CHINA        
Net sales by segment     2,473,733 442,262
UNITED STATES        
Net sales by segment     18,521,327 18,965,893
Net sales by segment $ 8,686,575 $ 8,277,575 $ 23,415,946 $ 22,220,379