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Note 8 - Stockholders' Equity (Tables) | 9 Months Ended
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May 31, 2013
Stockholders' Equity Note Disclosure [Text Block] |
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] |
| Options Exercised |  | Exercise Price |  |
| 25,140 |  | $ | 9.95 |  |
| 4,000 |  |  | 8.57 |  |
| 1,734 |  |  | 7.65 |  |
| 1,500 |  |  | 9.76 |  |
| 666 |  |  | 7.75 |  |
| Options Exercised |  | Exercise Price |  |
| 1,966 |  | $ | 7.65 |  |

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- Definition Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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