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Note 10 - Geographic and Segment Information (Details) - Operating Income by Geographic Distribution (USD $) | 3 Months Ended | 9 Months Ended
--- | --- | ---
May 31, 2014 | May 31, 2013 | May 31, 2014 | May 31, 2013
Segment Reporting Information [Line Items] |  |  |  |
Total operating income | $ 1,765,231 | $ 1,493,771 | $ 4,932,764 | $ 3,337,290
BRAZIL |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total operating income | 70,464 | (156,594) | (75,491) | (263,353)
INDIA |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total operating income | 72 |  | 5,872 |
North America [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total operating income | $ 1,694,695 | $ 1,650,365 | $ 5,002,383 | $ 3,600,643

X
- Definition The net result for the period of deducting operating expenses from operating revenues. + References No definition available. + Details
Name: | us-gaap_OperatingIncomeLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Details
Name: | us-gaap_SegmentReportingInformationLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration