XML 65 R42.htm IDEA: XBRL DOCUMENT v3.20.2
Stock Based Compensation (Details Narrative) - USD ($)
12 Months Ended
May 31, 2020
May 31, 2019
May 31, 2018
Share-based Payment Arrangement [Abstract]      
Outstanding options 22,500 254,166 318,332
Weighted average exercise price, outstanding options $ 1.70 $ 2.41 $ 2.36
Restricted stock units granted 87,478    
Restricted stock units grant date fair value $ 261,559    
Restricted stock units vested (113,561)    
Restricted stock units forfeited (16,770)    
Restricted stock unit compensation expense $ 354,048