XML 60 R47.htm IDEA: XBRL DOCUMENT v3.5.0.2
Note 12 - Cost of Goods Sold by Segment (Details) - USD ($)
 3 Months Ended 9 Months Ended
May 31, 2016
May 31, 2015
May 31, 2016
May 31, 2015
Direct Cost of Goods Sold [Member] | ZERUST [Member]        
Cost of goods sold $ 4,028,114 $ 3,942,776 $ 10,968,742 [1] $ 10,452,467 [1]
Percentage of product sales [1] 56.10% 55.70% 56.10% 54.70%
Direct Cost of Goods Sold [Member] | NaturTec [Member]        
Cost of goods sold $ 1,119,730 $ 889,976 $ 2,938,927 [1] $ 2,391,599 [1]
Percentage of product sales [1] 74.60% 74.10% 76.00% 76.60%
Indirect Cost of Goods Sold [Member]        
Cost of goods sold $ 629,405 $ 762,455 $ 2,013,227 [1] $ 2,215,492 [1]
Percentage of product sales [1]
Cost of goods sold $ 5,777,249 $ 5,595,207 $ 15,920,896 [1] $ 15,059,558 [1]
Percentage of product sales [1]
[1] The percent of segment sales is calculated by dividing the direct cost of goods sold for each individual segment category by the net sales for each segment category.