Note 12 - Segment and Geographic Information - Total Net Sales by Geographic Distribution (Details) - USD ($)	12 Months Ended
	Aug. 31, 2016	Aug. 31, 2015
CHINA
Total net sales	$ 4,114,288	$ 1,070,422
BRAZIL
Total net sales	2,172,297	2,623,938
INDIA
Total net sales	1,104,947	967,241
Other Countries [Member]
Total net sales	5,237,553	6,331,113
UNITED STATES
Total net sales	20,304,480	19,329,979
Total net sales	$ 32,933,565	$ 30,322,693