Stockholders' Equity (Tables)

6 Months Ended

Jun. 30, 2022

Stockholders' Equity Note [Abstract]

Share-based Compensation, Stock Options, Activity

A summary of employees’ stock options activities during the six months ended June 30, 2022 is as follows:

 

	Six Months Ended June 30, 2022 (unaudited)
	Number	Weighted average exercise price		Aggregate intrinsic value (in thousands)		Weighted average remaining contractual life (years)
Options outstanding as of January 1, 2022	803,870	$	7.077	$	33,524	2.747
Granted	—	$	—
Exercised	(4,108)	$	6.808
Forfeited and expired	—	$	—
Options outstanding as of June 30, 2022	799,762	$	7.078	$	17,788	2.245
Options exercisable as of June 30, 2022	788,374	$	7.099	$	17,519	2.168

Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range

The options outstanding as of June 30, 2022 (unaudited) have been separated into ranges of exercise price as follows:

Range of exercise price				Options outstanding as of June 30, 2022	Weighted average remaining contractual life (years)	Weighted average exercise price of options outstanding		Options exercisable as of June 30, 2022	Weighted average remaining contractual life (years)	Weighted average exercise price of options exercisable
$	4.157	—	5.682	223,761	2.442	$	4.880	212,373	2.165	$	4.828
$	6.503	—	8.077	430,099	2.062	$	7.111	430,099	2.062	$	7.111
		$9.960		120,180	2.647	$	9.960	120,180	2.647	$	9.960
		$13.287		25,722	1.726	$	13.287	25,722	1.726	$	13.287
				799,762	2.245	$	7.078	788,374	2.168	$	7.099

Schedule of Stockholders' Equity Note, Warrants or Rights

The Company’s outstanding options granted to consultants for services as of June 30, 2022 (unaudited) were as follows:

	Number of options outstanding and exercisable as of June 30, 2022	Range of exercise price per share					Exercisable through
August 2013 - February 2016	22,650	$	5.623	—	$	13.287	August 2023 - February 2026

Schedule of Share-based Payment Arrangement, Restricted Stock Unit and Performance Stock Unit Activity

A summary of RSUs and PSUs for employees, consultants and non-employee directors of the Company for the six months ended June 30, 2022 (unaudited) is as follows:

 

	Number of shares underlying outstanding RSUs and PSUs	Weighted- average grant date fair value
Unvested balance - January 1, 2022	7,726,125	$	42.53
Granted	3,678,761	$	42.69
Vested	(2,868,968)	$	34.86
Forfeited	(394,476)	$	47.58
Unvested balance – June 30, 2022	8,141,442	$	45.06

Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs

The Company recognized stock-based compensation expense in the consolidated statements of operations as follows (in thousands):

 

	Three Months Ended June 30,				Six Months Ended June 30,
	2022		2021		2022		2021
	(unaudited)				(unaudited)
Cost of revenues	$	3,015	$	1,856	$	6,102	$	3,445
Research and development	13,638		8,920		26,238		16,078
Sales and marketing	13,568		9,492		26,664		17,234
General and administrative	7,537		5,600		14,752		10,490
Total	$	37,758	$	25,868	$	73,756	$	47,247