Share-Based Payments (Details Narrative) - USD ($)
3 Months Ended 6 Months Ended
Aug. 31, 2020
Aug. 31, 2019
Aug. 31, 2020
Aug. 31, 2019
Stock options granted     3,389 0
Stock options granted, weighted average exercise price     $ 8.78 $ .00
Stock options forfeited     0 39,902
Stock options forfeited, weighted average exercise price     $ .00 $ 9.67
Stock options exercised     0 5,000
Stock options exercised, weighted average exercise price     $ 0.00 $ 0.80
Stock options expired     0 260,417
Stock options expired, weighted average exercise price     $ .00 $ 13.59
Stock options outstanding 1,587,081 1,657,081 1,587,081 1,657,081
Stock options outstanding, weighted average exercise price $ 6.81 $ 6.55 $ 6.81 $ 6.55
Stock options exercisable 1,083,748 958,748 1,083,748 958,748
Stock options exercisable, weighted average exercise price $ 7.05 $ 6.26 $ 7.05 $ 6.26
Stock option expense $ 553,540 $ 498,198 $ 1,110,435 $ 1,073,711
Restricted stock unit expense 312,390 305,130 682,877 660,307
Stock-based compensation expense     1,877,754 1,734,018
Research and Development Expenses        
Stock-based compensation expense 352,282 250,242 704,289 660,455
General and Administrative Expenses        
Stock-based compensation expense $ 513,648 $ 755,229 $ 1,173,465 $ 1,530,686
Restricted Stock Units        
Restricted stock units granted     122,373 4,114,567
Restricted stock units granted, weighted average exercise price     $ 8.86 $ 1.06
Restricted stock units settled     24,436 43,932
Restricted stock units settled, weighted average exercise price     $ 9.78 $ 10.36
Restricted stock units forfeited     2,989 53,750
Restricted stock units forfeited, weighted average exercise price     $ 8.78 $ 9.82
Restricted stock units outstanding 4,313,750 4,218,802 4,313,750 4,218,802
Restricted stock units vested     891,327 1,031,684