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STOCK-BASED COMPENSATION (Tables)
 9 Months Ended
Sep. 30, 2021
Share-based Payment Arrangement [Abstract]  
Schedule of Share-Based Compensation Expense
Total stock-based compensation expense reported in the condensed consolidated statements of operations was allocated as follows (in thousands):
Three Months Ended
September 30,		Nine Months Ended
September 30,
2021202020212020
Research and development$161 $98 $358 $270 
General and administrative616 455 1,309 1,139 
Total stock-based compensation expense$777 $553 $1,667 $1,409