XML 19 R23.htm IDEA: XBRL DOCUMENT v3.19.3
9. Share-Based Expense (Tables)
9 Months Ended
Sep. 30, 2019
Share-based Payment Arrangement [Abstract]  
Share-based expense

Share-based compensation expense is classified in the condensed consolidated statements of operations as follows:

 

   Three Months Ended September 30,   Nine Months Ended September 30, 
   2019   2018   2019   2018 
Research and development expenses  $38,843   $9,155   $81,921   $178,926 
General and administrative expenses   208,594    314,323    648,610    996,355 
   $247,437   $323,478   $730,531   $1,175,281