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LOSSES PER SHARE (Schedule of Computation of Basic and Diluted Losses Per Share) (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Numerator:
Net loss for basic loss per share	$ (37,066)	$ (31,506)	$ (20,163)
Net loss for basic loss per share	$ (37,066)	$ (31,506)	$ (20,163)
Denominator:
Weighted average number of ordinary shares used in computing basic net loss per share	51,179,694	50,855,908	50,437,040
Basic and diluted earnings per ordinary share	$ (0.72)	$ (0.62)	$ (0.40)

X

- Definition

The portion of profit or loss for the period, net of income taxes, after adjustment of change in fair value of research and development funding arrangement, which is attributable to the parent.

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- Definition

The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

+ References

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Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.

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