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Note 7 - Stockholders' Equity (Details) - Exercised Stock Options (USD $)	9 Months Ended
	May 31, 2013 Exercise 1 [Member]	May 31, 2014 Exercise 2 [Member]	May 31, 2014 Exercise 3 [Member]	May 31, 2014 Exercise 4 [Member]	May 31, 2014 Exercise 5 [Member]	May 31, 2014 Exercise 6 [Member]
Note 7 - Stockholders' Equity (Details) - Exercised Stock Options [Line Items]
Options Exercised	44,000	25,140	4,000	1,734	1,500	666
Exercise Price	$ 7.65	$ 9.95	$ 8.57	$ 7.65	$ 9.76	$ 7.75

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Number of share options (or share units) exercised during the current period.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

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Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

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