STOCK CAPITAL (Tables)

6 Months Ended

Jun. 30, 2019

Share-based Payment Arrangement [Abstract]

Schedule of Composition of Common Stock Capital

a. Common Stock:

	Number of shares
	Authorized				Issued and outstanding
	June 30, 2019		December 31, 2018		June 30, 2019		December 31, 2018
	(unaudited)				(unaudited)
Stock of $0.0001par value:
Common stock		125,000,000		125,000,000		47,967,425		46,052,802

Schedule of Stock Option Activity

A summary of the activity in the share options granted to employees and directors for the six months ended June 30, 2019 (unaudited) and related information follows:

						Weighted
						average
				Weighted		remaining
	Number			average		contractual		Aggregate
	of			exercise		term		intrinsic
	Options			price		in years		Value
Outstanding as of December 31, 2018		2,401,893			11.04		6.19		58,323
Granted		267,852			36.15
Exercised		(145,246	)		8.65
Forfeited and expired		(10,625	)		14.51
Outstanding as of June 30, 2019		2,513,874			13.84		6.14		122,227
Vested and expected to vest as of June 30, 2019		2,479,232			13.70		6.11		59,508
Exercisable as of June 30, 2019		1,864,999			9.02		5.34		99,673

Schedule of RSU Activity

d.     A summary of the activity in the RSUs (excluding PSUs) granted to employees and members of the board of directors for the six months ended June 30, 2019 (unaudited) is as follows:

	Number of RSUs			Weighted average grant date fair value
Unvested as of December 31, 2018		2,807,232			34.40
Granted		480,022			43.85
Vested		(487,906	)		32.49
Forfeited		(145,142	)		36.27
Unvested as of June 30, 2019 (unaudited)		2,654,206			36.36

Schedule of Options and RSUs Granted to Non-Employee Consultants

The Company has granted options and RSUs to purchase common shares to non-employee consultants as of June 30, 2019 (unaudited) as follows:

	Outstanding			Exercisable
	as of			as of
Issuance	June 30,		Exercise	June 30,		Options exercisable
Date	2019		price	2019		through
2014		6,023	$3.51 - $5.01		5,245	October 29, 2024
2015		2,127	$0.00		-
2016		5,001	$0.00 - $15.34		-	September 21, 2026
2017		13,126	$0.00 - $13.70		-	March 15, 2027
2018		19,496	$0.00		-
2019		12,699	$0.00		-
		58,472			5,245

Schedule of Recognized Stock-Based Compensation Expense

The Company recognized stock-based compensation expenses related to stock options, RSUs and PSUs granted to employees and non-employee consultants and ESPP in the condensed consolidated statement of income for the three and six months ended June 30, 2019 (unaudited) and 2018 (unaudited), as follows:

	Three months ended June 30,				Six months ended June 30,
	2019		2018		2019		2018
	Unaudited				Unaudited
Cost of revenues	$	1,651	$	968	$	3,005	$	1,892
Research and development		4,176		2,605		7,666		4,987
Selling and marketing		2,722		2,094		5,126		4,298
General and administrative		2,823		1,461		5,279		2,800
Total stock-based compensation expense	$	11,372	$	7,128	$	21,076	$	13,977