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SHAREHOLDERS' EQUITY (Details 1) - Employee Stock Option And Restricted Stock Units Rsu [Member]
12 Months Ended
Dec. 31, 2020
$ / shares
shares
Number of shares underlying outstanding RSUs  
Unvested RSUs at the Beginning of the period | shares 62,378
Granted | shares 1,266,185
Vested | shares (63,111)
Forfeited | shares (14,141)
Unvested RSUs at the end of the period | shares 1,251,311
Weighted average grant date fair value  
Unvested RSUs at the Beginning of the period | $ / shares $ 44.61
Granted | $ / shares 1.44
Vested | $ / shares 7.83
Forfeited | $ / shares 6.05
Unvested RSUs at the end of the period | $ / shares $ 3.20