Note 12 - Geographic and Segment Information (Details) - Total Net Sales by Geographic Distribution - USD ($)	3 Months Ended		9 Months Ended
	May. 31, 2015	May. 31, 2014	May. 31, 2015	May. 31, 2014
Note 12 - Geographic and Segment Information (Details) - Total Net Sales by Geographic Distribution [Line Items]
Total net sales	$ 8,277,575	$ 6,920,820	$ 22,220,379	$ 19,448,928
BRAZIL
Note 12 - Geographic and Segment Information (Details) - Total Net Sales by Geographic Distribution [Line Items]
Total net sales			2,103,589	1,865,137
CHINA
Note 12 - Geographic and Segment Information (Details) - Total Net Sales by Geographic Distribution [Line Items]
Total net sales			442,262
INDIA
Note 12 - Geographic and Segment Information (Details) - Total Net Sales by Geographic Distribution [Line Items]
Total net sales			708,635	361,700
UNITED STATES
Note 12 - Geographic and Segment Information (Details) - Total Net Sales by Geographic Distribution [Line Items]
Total net sales			$ 18,965,893	$ 17,222,091