BASIC AND DILUTED NET LOSS PER SHARE (Tables)

12 Months Ended

Dec. 31, 2018

Earnings Per Share [Abstract]

Schedule of Basic and Diluted Net Loss Per Share

	Year ended December 31,
	2016			2017			2018
Net loss available to shareholders of ordinary shares	$	(46,896	)	$	(56,273	)	$	(37,120	)
Denominator:
Shares used in computing net loss per ordinary shares, basic and diluted		42,032,818			45,552,199			48,017,188

Summary of Reconciliation of Basic Weighted Average Number of Shares

The following table summarizes the reconciliation of the basic weighted average number of shares outstanding and the diluted weighted average number of shares outstanding.

	Year ended December 31,
	2016		2017		2018
Shares used in computing net loss per ordinary shares, basic and diluted		42,032,818		45,552,199		48,017,188
The following items have been excluded from the diluted weighted average number of shares outstanding because they are anti-dilutive:
Stock options		8,405,787		8,212,554		7,676,713
Restricted share units		1,368,050		2,081,646		2,090,512
		9,773,837		10,294,200		9,767,225