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Note 10 - Stock-Based Compensation (Tables)

3 Months Ended

Nov. 30, 2012

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

		November 30,
		2012						2011
Dividend yield				0.00%					0.00%
Expected volatility				48.0%					48.8%
Expected life of option (years)			5	-	10				5
Average risk-free interest rate				0.71%					1.31%

X

- Definition

Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions.

+ 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 (f)(2)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration