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FINANCIAL INCOME, NET (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Other Income and Expenses [Abstract]      
Bank charges $ (274) $ (177) $ (158)
Exchange rate income (losses), net (803) (1,050) 1,735
Interest income 10,843 5,778 2,526
Amortization of debt discount and issuance costs (1,966)
Financial income, net $ 7,800 $ 4,551 $ 4,103