Note 11 - Geographic And Segment Information (Detail) - Operating income by geographic distribution: (USD $)	3 Months Ended
Nov. 30, 2012	Nov. 30, 2011
Net sales	$ 5,291,747	$ 4,832,114
Operating income	873,664	1,032,502
Brazil [Member]
Net sales	551,814	604,920
Operating income	(23,148)	(155,174)
North America [Member]
Net sales	4,739,933	4,227,194
Operating income	$ 896,812	$ 1,187,676

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=6880815&loc=d3e20235-122688

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 1

-Article 5

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