Selected Statements Of Operations Data (Details 1) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017
Financial income:
Amortization of premium related to convertible loans	$ (2,149)
Total finance income	(2,149)
Financial expenses:
Accrued interest on convertible loans	56	47
Change in fair value of marketable equity securities	33
Amortization of BCF, proceeds allocated to the derivative liability and debt issuance costs for 2016 Loan		1,122
Amortization of discount and exchange rate differences on license purchase obligation		3
Bank commissions and exchange rates		6
Change in the fair value of derivative liability for right to future investment		246
Loss from extinguishment of convertible loans (Note 8)	1,709	61
Total financial expenses	1,798	1,485
Total financial expenses (income), net	$ 351	$ (1,485)

Amount of noncash expense included in interest expense to amortize debt discount and premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate captions include noncash interest expense.

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