Note 12 - Segment and Geographic Information - Net Sales by Segment (Details) - USD ($)	12 Months Ended
Aug. 31, 2016	Aug. 31, 2015
ZERUST [Member]
Net sales by segment	$ 27,577,566	$ 26,042,909
NaturTec [Member]
Net sales by segment	5,355,999	4,279,784
Net sales by segment	$ 32,933,565	$ 30,322,693

Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

Name:	us-gaap_SalesRevenueNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration