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Note 8 - Stockholders' Equity (Details) (USD $) | 3 Months Ended
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Nov. 30, 2013 | Nov. 30, 2012
Note 8 - Stockholders' Equity (Details) [Line Items] |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in Shares) | 56,373 | 96,294
2007 Plan [Member] |  |
Note 8 - Stockholders' Equity (Details) [Line Items] |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in Shares) | 56,373 | 118,294
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in Dollars per share) | $ 14.83 | $ 10.25

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- Definition Gross number of share options (or share units) granted during the period. + References No definition available. + Details
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- Definition Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options. + References No definition available. + Details
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