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Equity Award Plans (Tables)
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12 Months Ended |
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Dec. 31, 2014
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| Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
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| 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 | | —% | | —% | | —% |
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| 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 | | — % | | — % |
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| 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 |
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| 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 |
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| 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 |
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| 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 |
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