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Selected Statements of Operations Data (Details 2) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Financial Income:
Interest income	$ 1,455	$ 572	$ 489
Foreign currency exchange gain	784	215	424
Financial income	2,239	787	913
Financial expenses:
Bank charges	(15)	(58)	(23)
Foreign currency exchange loss	(1,088)	(340)	(74)
Financial expenses	(1,103)	(398)	(97)
Financial income, net	$ 1,136	$ 389	$ 816

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Amount of bank charges.

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Amount before tax of foreign currency transaction realized and unrealized loss recognized in the income statement.

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The amount of interest income and other income recognized during the period. Included in this element is interest derived from investments in debt securities, cash and cash equivalents, and other investments which reflect the time value of money or transactions in which the payments are for the use or forbearance of money and other income from ancillary business-related activities (that is, excluding major activities considered part of the normal operations of the business).

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Interest income generated from amounts on deposit with foreign entities located outside the United States of America.

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Amount of income related to nonoperating activities, classified as other.

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