Annual report pursuant to Section 13 and 15(d)

Stock based compensation (Details 1)

v3.10.0.1
Stock based compensation (Details 1)
12 Months Ended
Aug. 31, 2018
Aug. 31, 2017
Expected life 4 years 4 years
Dividends 0.00% 0.00%
Minimum [Member]    
Estimated volatility 27.45% 37.03%
Risk-free interest rate 2.01% 1.86%
Maximum [Member]    
Estimated volatility 48.59% 44.74%
Risk-free interest rate 2.83% 2.80%