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Selected Statements of Operations Data (Details 2) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Financial Income:
Interest income	$ 572	$ 489	$ 229
Foreign currency exchange gain	215	424	36
Financial income	787	913	265
Financial expenses:
Bank charges	(58)	(23)	(23)
Foreign currency exchange loss	(340)	(74)	(675)
Financial expenses	(398)	(97)	(698)
Financial income (expenses), net	$ 389	$ 816	$ (433)

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Amount of bank charges.

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 830
-SubTopic 20
-Section 45
-Paragraph 1
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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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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 225
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04.4)
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The aggregate amount of income or expense from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business).

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-Publisher FASB
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-Paragraph 2
-Subparagraph (SX 210.5-03.7)
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Amount of expense related to nonoperating activities, classified as other.

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

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