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Note 12 - Segment and Geographic Location - Net Sales by Geographic Location (Details) - USD ($) | 12 Months Ended
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Aug. 31, 2016 | Aug. 31, 2015
Inside the USA to Unaffiliated Customers [Member] |  |
Net sales by segment | $ 20,304,480 | $ 19,329,979
Joint Ventures in Which the Company is a Shareholder Directly and Indirectly Outside the USA [Member] |  |
Net sales by segment | 2,721,905 | 2,831,301
Unaffiliated Customers Outside the USA [Member] |  |
Net sales by segment | 9,907,180 | 8,161,413
Net sales by segment | $ 32,933,565 | $ 30,322,693

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- Definition 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. + References 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 + Details
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