Equity Award Plans (Tables)

12 Months Ended

Dec. 31, 2014

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Summary of Assumptions used in the Black-Scholes Option-Pricing Model to Determine Fair Value of Stock Options

The following table summarizes the assumptions used in the Black-Scholes option-pricing model to determine fair value of our stock options:

	Year Ended December 31,
	2014	2013	2012
Fair value of common stock	$27.89 - $75.87	$6.05 - $42.37	$1.65 - $5.44
Risk-free interest rate	1.8% - 2.0%	0.6% - 2.1%	0.2% - 3.4%
Expected term (in years)	6	4 - 6	1 - 6
Volatility	51% - 53%	46% - 54%	49% - 53%
Dividend yield	—%	—%	—%

Summary of Assumptions used in the Black-Scholes Option-Pricing Model to Determine Fair Value of Common Shares to be Issued under the ESPP

The following table summarizes the assumptions used in the Black-Scholes option-pricing model to determine fair value of our common shares to be issued under the ESPP:

	Year Ended December 31,
	2014	2013
Fair value of common stock	$27.08 - $32.32	$20.00
Risk-free interest rate	0.1%	0.1%
Expected term (in years)	0.5 - 1.0	0.7 - 1.2
Volatility	35% - 45%	42% - 45%
Dividend yield	— %	— %

Schedule of Stock-based Compensation Expense Related to Stock Options, ESPP and restricted Stock Units and Awards

Total stock-based compensation expense related to stock options, ESPP and restricted stock units and awards is included in the consolidated statements of operations as follows (in thousands):

	Year Ended December 31,
	2014		2013		2012
Cost of product revenue	$	888	$	469	$	115
Cost of subscription and services revenue	17,037		2,341		55
Research and development	28,968		6,958		1,465
Sales and marketing	66,773		10,748		1,672
General and administrative	38,186		8,342		3,536
Total	$	151,852	$	28,858	$	6,843

Summary of Activity for Stock Option Changes and Information Related to Options Vested and Expected to Vest and Options Exercisable

A summary of the activity for our stock option changes during the reporting periods and a summary of information related to options vested and expected to vest and options exercisable are presented below (in thousands, except per share and contractual life amounts and years):

	Options Outstanding
	Number of Shares		Weighted- Average Exercise Price		Weighted- Average Grant Date Fair Value		Weighted- Average Contractual Life (years)	Aggregate Intrinsic Value
Balance — December 31, 2011	14,711		$	0.42			8.6	$	11,227
Option granted	11,341		$	1.92	$	1.35
Options exercised	(7,472	)	$	1.27				$	6,682
Options canceled	(1,244	)	$	1.06
Balance — December 31, 2012	17,336		$	0.98			8.3	$	77,250
Option granted	13,182		$	9.57	$	5.71
Options exercised	(6,222	)	$	0.88				$	41,599
Options canceled	(1,453	)	$	3.60
Options assumed in acquisition	4,579		$	5.93
Balance — December 31, 2013	27,422		$	5.82			8.3	$	1,036,224
Option granted	676		$	72.60	$	72.60
Options exercised	(7,642	)	$	2.97				$	271,236
Options cancelled	(1,941	)	$	9.10
Options assumed in acquisition	63		$	20.60
Balance — December 31, 2014	18,578		$	9.13			7.4	$	445,636
Options vested and expected to vest — December 31, 2014	18,148		$	9.01			7.4	$	436,741
Options exercisable — December 31, 2014	8,590		$	5.48			6.6	$	227,063

Schedule of Additional Information Regarding Options Outstanding

Additional information regarding options outstanding as of December 31, 2014 is as follows (in thousands, except per share data and years):

	Options Outstanding				Options Exercisable
Exercise Price Range	Number of Shares	Weighted- Average Remaining Contractual Life (Years)	Weighted- Average Exercise Price		Number of Shares	Weighted- Average Exercise Price
$0.06 — $0.57	2,168	4.6	$	0.24	2,095	$	0.23
$0.75 — $1.65	2,355	6.5	$	1.42	1,487	$	1.37
$2.48 — $3.66	1,329	7.6	$	2.96	549	$	2.93
$5.44 — $5.44	2,851	7.9	$	5.44	1,081	$	5.44
$6.61 — $7.92	1,277	6.4	$	6.90	857	$	6.82
$7.93 — $7.93	2,752	7.9	$	7.93	932	$	7.93
$8.09 — $9.68	2,011	8.4	$	9.33	628	$	9.32
$10.25 — $13.00	2,494	8.4	$	11.94	720	$	11.91
$20.00 — $74.35	1,301	8.7	$	49.26	241	$	38.89
$75.87 — $75.87	40	9.2	$	75.87	—	$	—
$0.06 - $75.87	18,578	7.4	$	9.13	8,590	$	5.48

Summary of Activity of Restricted Common Stock, RSAs and RSUs and Information Related to Unvested Restricted Stock, RSAs and RSUs and those Expected to Vest

A summary of the activity for our restricted common stock, RSAs and RSUs during the reporting periods and a summary of information related to unvested restricted common stock, RSAs and RSUs and those expected to vest are presented below (in thousands, except per share data and years):

	Number of Shares		Weighted- Average Grant-Date Fair Value		Weighted- Average Contractual Life (years)	Aggregate Intrinsic Value
Unvested balance — December 31, 2011	1,220
Granted	2,687		$	2.72
Vested	(898	)
Canceled/forfeited	—
Unvested balance — December 31, 2012	3,009
Granted	1,949		$	31.59
Vested	(2,115	)
Canceled/forfeited	(262	)
Granted in connection with acquisitions	1,021		$	37.65
Unvested balance — December 31, 2013	3,602
Granted	6,734		$	42.12
Vested	(1,482	)
Canceled/forfeited	(809	)
Granted in connection with acquisitions	296		$	26.44
Unvested balance — December 31, 2014	8,341				1.7	$	263,416
Expected to vest — December 31, 2014	7,819				1.7	246,926