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Note 8 - Stockholders' Equity (Detail) - Exercised Stock Options: (USD $) | 12 Months Ended
--- | ---
Aug. 31, 2012 | Aug. 31, 2011
Options Exercised | 3,966 | (66,633)
Exercise Price (in Dollars per share) | $ 8.71 | $ 6.97
Exercise 1 - FY12 [Member] |  |
Options Exercised | 1,966 |
Exercise Price (in Dollars per share) | $ 7.65 |
Exercise 2 - FY12 [Member] |  |
Options Exercised | 2,000 |
Exercise Price (in Dollars per share) | $ 9.75 |
Exercise 1 [Member] |  |
Options Exercised |  | 40,000
Exercise Price (in Dollars per share) |  | $ 5.38
Exercise 2 [Member] |  |
Options Exercised |  | 3,300
Exercise Price (in Dollars per share) |  | $ 7.65
Exercise 3 [Member] |  |
Options Exercised |  | 666
Exercise Price (in Dollars per share) |  | $ 7.75
Exercise 4 [Member] |  |
Options Exercised |  | 8,000
Exercise Price (in Dollars per share) |  | $ 8.01
Exercise 5 [Member] |  |
Options Exercised |  | 4,000
Exercise Price (in Dollars per share) |  | $ 8.57
Exercise 6 [Member] |  |
Options Exercised |  | 1,334
Exercise Price (in Dollars per share) |  | $ 9.75
Exercise 7 [Member] |  |
Options Exercised |  | 4,000
Exercise Price (in Dollars per share) |  | $ 9.76
Exercise 8 [Member] |  |
Options Exercised |  | 5,333
Exercise Price (in Dollars per share) |  | $ 12.84

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- Definition Number of share options (or share units) exercised during the current period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.28,29) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30 -Article 5 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=6959260&loc=d3e187085-122770 + Details
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