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SIGNIFICANT ACCOUNTING POLICIES (Tables)
6 Months Ended
Jun. 30, 2021
Accounting Policies [Abstract]  
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share
The following average stock options, restricted stock units (“RSUs”), warrants and incremental shares to be issued under the employee stock purchase plan (“ESPP”) were excluded from the calculation of diluted net loss per share because their effect would have been anti-dilutive for the periods presented (share data):
Three months ended June 30Six months ended June 30
2021202020212020
Outstanding stock options, RSUs and shares under the ESPP5,378,428 3,743,846 5,365,232 3,020,509 
Warrants
495,165 473,258 495,165 318,084