Note 11 - Stock-Based Compensation (Tables)

6 Months Ended

Feb. 28, 2015

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

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

	Six Months Ended
	February 28, 2015			February 28, 2014
Dividend yield		0.00	%		0.00	%
Expected volatility		46.6	%		47.3	%
Expected life of option (in years)		10			10
Average risk-free interest rate		1.63	%		1.36	%