Annual report pursuant to Section 13 and 15(d)

Share based compensation (Details 4)

v3.19.3.a.u2
Share based compensation (Details 4)
12 Months Ended
Aug. 31, 2019
$ / shares
shares
Exercise Prices Four [Member] | Maximum [Member]  
Exercise Prices $ 4.00
Exercise Prices Four [Member] | Minimum [Member]  
Exercise Prices 3.01
Exercise Prices Three [Member] | Maximum [Member]  
Exercise Prices 3.00
Exercise Prices Three [Member] | Minimum [Member]  
Exercise Prices 2.01
Exercise Prices Two [Member] | Maximum [Member]  
Exercise Prices 2.00
Exercise Prices Two [Member] | Minimum [Member]  
Exercise Prices 1.01
Exercise Prices One [Member] | Maximum [Member]  
Exercise Prices 1.00
Exercise Prices One [Member] | Minimum [Member]  
Exercise Prices 0.47
Exercise Prices Five [Member] | Maximum [Member]  
Exercise Prices 9.79
Exercise Prices Five [Member] | Minimum [Member]  
Exercise Prices $ 4.01
Options Vested Five [Member]  
Number of options | shares 28,646
Weighted Average Remaining Contractual Life In Years 7 years 10 months 17 days
Weighted Average Exercise Price $ 9.79
Options Vested Four [Member]  
Number of options | shares 214,896
Weighted Average Remaining Contractual Life In Years 7 years 7 months 6 days
Weighted Average Exercise Price $ 3.96
Options Vested Three [Member]  
Number of options | shares 168,071
Weighted Average Remaining Contractual Life In Years 8 years 7 months 17 days
Weighted Average Exercise Price $ 2.63
Options Vested Two [Member]  
Number of options | shares
Weighted Average Remaining Contractual Life In Years
Weighted Average Exercise Price
Options Vested One [Member]  
Number of options | shares
Weighted Average Remaining Contractual Life In Years
Weighted Average Exercise Price
Options Vested [Member]  
Number of options | shares 411,613
Weighted Average Remaining Contractual Life In Years 8 years 15 days
Weighted Average Exercise Price $ 3.82
Options Outstanding and Exercisable Five [Member]  
Number of options | shares 55,000
Weighted Average Remaining Contractual Life In Years 7 years 10 months 17 days
Weighted Average Exercise Price $ 9.79
Options Outstanding and Exercisable One [Member]  
Number of options | shares 325,000
Weighted Average Remaining Contractual Life In Years 9 years 9 months 7 days
Weighted Average Exercise Price $ 0.56
Options Outstanding and Exercisable Three [Member]  
Number of options | shares 514,527
Weighted Average Remaining Contractual Life In Years 8 years 8 months 2 days
Weighted Average Exercise Price $ 2.60
Options Outstanding and Exercisable Four [Member]  
Number of options | shares 505,000
Weighted Average Remaining Contractual Life In Years 8 years 15 days
Weighted Average Exercise Price $ 3.88
Options Outstanding and Exercisable Two [Member]  
Number of options | shares 630,405
Weighted Average Remaining Contractual Life In Years 9 years 7 months 2 days
Weighted Average Exercise Price $ 1.29
Options Outstanding and Exercisable [Member]  
Number of options | shares 2,029,932
Weighted Average Remaining Contractual Life In Years 8 years 11 months 12 days
Weighted Average Exercise Price $ 2.38