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SHAREHOLDERS' EQUITY (Details 2) - Employee Stock Option And Restricted Stock Units Rsu [Member]
6 Months Ended
Jun. 30, 2020
$ / shares
shares
Number of shares underlying outstanding RSUs  
Unvested RSUs at the Beginning of the period | shares 62,378
Granted | shares 300,000
Vested | shares (24,625)
Forfeited | shares (6,992)
Unvested RSUs at the end of the period | shares 330,761
Weighted average grant date fair value  
Unvested RSUs at the Beginning of the period | $ / shares $ 44.61
Granted | $ / shares 2.23
Vested | $ / shares 14.80
Forfeited | $ / shares 8.24
Unvested RSUs at the end of the period | $ / shares $ 6.39