STOCK CAPITAL (Tables)

12 Months Ended

Dec. 31, 2018

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Schedule of composition of common stock capital

Composition of common stock capital of the Company:

	Number of shares
	Authorized as of December 31,						Issued and outstanding as of December 31,
	2018		2017		2016		2018		2017		2016
Stock of $0.0001 par value:
Common stock		125,000,000		125,000,000		125,000,000		46,052,802		43,812,601		41,259,391

Schedule of exercise price range of options

The options outstanding as of December 31, 2018, have been separated into exercise price ranges as follows:

	Options		Weighted		Options		Weighted
	outstanding		average		exercisable		average
Range of	as of		remaining		as of		remaining
exercise	December 31,		contractual		December 31,		contractual
price	2018		Life in years		2018		Life in years
$0.87 – $1.50		22,236		0.57		22,236		0.57
$2.01 – $2.46		331,482		2.56		331,482		2.56
$3.03 – $5.01		1,080,892		5.86		1,043,120		5.86
$9.36		10,546		6.08		10,098		6.08
$13.70 – $14.85		426,181		8.14		180,479		8.14
$15.34 – $17.14		183,623		7.66		100,571		7.66
$20.81 – $25.09		165,950		6.68		121,100		6.68
$38.05		180,983		9.01		33,928		9.01
		2,401,893		6.19		1,843,014		5.64

Schedule of RSU Activity

A summary of the activity in the RSUs granted to employees and members of the board of directors for the year ended December 31, 2018, is as follows:

	No. of RSUs			Weighted averagegrant date fair value
Unvested as of January 1, 2018		2,087,992			24.33
Granted		1,744,621			41.45
Vested		(811,376	)		24.97
Forfeited		(214,005	)		29.36
Unvested as of December 31, 2018		2,807,232			34.40

Schedule of recognized stock-based compensation expenses

The Company recognized stock-based compensation expenses related to stock options and RSUs granted to employees and non-employee consultants and ESPP in the consolidated statement of operations for the years ended December 31, 2018, and December 31, 2017, the six months ended December 31, 2016, and the year ended June 30, 2016, as follows:

	Year ended December 31,				Six months ended December 31,		Year ended June 30,
	2018		2017		2016		2016
Cost of revenues	$	4,343	$	2,250	$	871	$	945
Research and development, net		11,205		5,703		2,061		2,364
Selling and marketing		9,111		5,387		1,852		2,915
General and administrative		5,959		4,224		1,816		2,820
Total stock-based compensation expense	$	30,618	$	17,564	$	6,600	$	9,044

Employee Stock Option [Member] | Employees and Members of Board of Directors [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Summary of the activity in the share options granted to employees and members of the board of directors

A summary of the activity in the share options granted to employees and members of the board of directors for the year ended December 31, 2018 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, 2017		3,524,310			7.40		6.35		106,251
Granted		180,983			38.05
Exercised		(1,280,057	)		4.89
Forfeited or expired		(23,343	)		8.35
Outstanding as of December 31, 2018		2,401,893			11.04		6.19		58,323
Vested and expected to vest as of December 31, 2018		2,359,484			10.94		6.17		57,520
Exercisable as of December 31, 2018		1,843,014			7.93		5.64		50,173

Employee Stock Option [Member] | Nonemployee Consultants [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Schedule of exercise price range of options

The Company has granted options and RSU’s to purchase common shares to non-employee consultants as of December 31, 2018 as follows:

	Options & RSU’s
	outstanding		Range		Exercisable
	as of		of		as of
Issuance	December 31,		Exercise		December 31,		Exercisable
Date	2018		price		2018		Through
2014		6,478		$3.51 - $5.01		4,923	October 29, 2024
2015		5,918		$0		-
2016		7,126		$0 - $15.34		-	September 21, 2026
2017		18,626		$0 - $13.70		-	March 15, 2027
2018		20,783		$0		-
		58,931				4,923