v2.4.0.8

Stockholders' Equity (Tables) | 12 Months Ended
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Dec. 31, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions And Allocation of Recognized Period Costs [Table Text Block] | :
| Fiscal Year
| 2013 |  | 2012 |  | 2011
Expected term in years | 4.6 |  |  | 4.6 |  |  | 4.1 – 4.6 |
Volatility (%) | 45 – 48 |  |  | 46 – 52 |  |  | 40 – 57 |
Risk-free interest rate (%) | 1.2 |  |  | 0.7 – 0.9 |  |  | 0.6 – 2.0 |
Dividend rate (%) | — |  |  | — |  |  | — |
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] | Additional information related to our stock options is summarized below ($ amounts in 000's, except per share amounts):
| Fiscal Year
| 2013 |  | 2012 |  | 2011
Weighted-average fair value per share granted | 8.42 |  |  | 11.13 |  |  | 8.10 |
Intrinsic value of options exercised | 41,484 |  |  | 92,323 |  |  | 113,590 |
Fair value of options vested | 26,411 |  |  | 25,350 |  |  | 11,800 |
The following table summarizes the stock option activity and related information for the periods presented below (in 000’s, except per share amounts, exercise prices and contractual life):
| Options Outstanding
| Number of Shares |  | Weighted- Average Exercise Price ($) |  | Weighted- Average Remaining Contractual Life (Years) |  | Aggregate Intrinsic Value ($)
Balance—December 31, 2010 | 22,489 |  |  | 4.21 |  |  |  |  |
Granted | 6,526 |  |  | 21.05 |  |  |  |  |
Forfeited | (1,397 | ) |  | 11.79 |  |  |  |  |
Exercised | (6,229 | ) |  | 3.21 |  |  |  |  |
Balance—December 31, 2011 | 21,389 |  |  | 9.14 |  |  |  |  |
Granted | 3,401 |  |  | 26.38 |  |  |  |  |
Forfeited | (1,441 | ) |  | 19.31 |  |  |  |  |
Exercised | (4,778 | ) |  | 5.69 |  |  |  |  |
Balance—December 31, 2012 | 18,571 |  |  | 12.40 |  |  |  |  |  |
Granted | 258 |  |  | 20.89 |  |  |  |  |
Forfeited | (820 | ) |  | 22.14 |  |  |  |  |
Exercised | (2,488 | ) |  | 5.18 |  |  |  |  |
Balance—December 31, 2013 | 15,521 |  |  | 13.18 |  |  |  |  |
Options vested and expected to vest—December 31, 2013 | 15,496 |  |  | 13.17 |  |  | 3.24 |  | 120,178 |
Options exercisable—December 31, 2013 | 12,084 |  |  | 10.52 |  |  | 2.82 |  | 118,226 |
Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block] | The following table summarizes information about outstanding and exercisable stock options as of December 31, 2013, as follows (in 000’s, except per share amounts, exercise prices and contractual life):
|  | Options Outstanding |  | Options Exercisable
Range of Exercise Prices ($) |  | Number Outstanding |  | Weighted- Average Remaining Contractual Life (Years) |  | Weighted- Average Exercise Price ($) |  | Number Exercisable |  | Weighted- Average Exercise Price ($)
0.48–1.20 |  | 1,331 |  |  | 1.75 |  | 0.97 |  |  | 1,331 |  |  | 0.97 |
3.74–4.65 |  | 4,902 |  |  | 1.66 |  | 3.75 |  |  | 4,902 |  |  | 3.75 |
5.50–6.25 |  | 152 |  |  | 2.71 |  | 5.64 |  |  | 152 |  |  | 5.64 |
8.43–8.99 |  | 1,636 |  |  | 3.16 |  | 8.55 |  |  | 1,486 |  |  | 8.53 |
15.28–19.94 |  | 382 |  |  | 4.15 |  | 15.88 |  |  | 231 |  |  | 15.28 |
20.13–24.92 |  | 4,835 |  |  | 4.41 |  | 21.32 |  |  | 2,902 |  |  | 21.20 |
26.70–26.70 |  | 2,283 |  |  | 5.01 |  | 26.70 |  |  | 1,080 |  |  | 26.70 |
|  | 15,521 |  |  |  |  |  |  |  | 12,084 |  |  |  |
Schedule of Share-based Compensation, Restricted Stock Units Award Activity [Table Text Block] | The following table summarizes the activity and related information for RSUs for the periods presented below (in 000’s, except per share amounts):
| Restricted Stock Units Outstanding
| Number of Shares |  | Weighted-Average Grant-Date-Fair Value per Share ($)
Balance—December 31, 2011 | — |  |  | — |
Granted | 873 |  |  | 23.79 |
Forfeited | (43 | ) |  | 24.76 |
Vested | — |  |  | — |
Balance—December 31, 2012 | 830 |  |  | 23.73 |
Granted | 4,104 |  |  | 21.75 |
Forfeited | (507 | ) |  | 21.48 |
Vested | (228 | ) |  | 23.89 |
Balance—December 31, 2013 | 4,199 |  |  | 22.00 |
RSUs expected to vest—December 31, 2013 | 3,898 |  |  | 22.02 |
Schedule of Share-based Compensation, Shares Withheld for Taxes [Table Text Block] | The following summarizes the number and value of the shares withheld for employee taxes for fiscal 2013 (in 000’s):
Shares withheld for taxes | 70 |
Amount withheld for taxes ($) | 1,452 |
Schedule of Share-based Payment Award, Equity Instruments Other than Options, Valuation Assumptions [Table Text Block] | The following table summarizes the weighted-average assumptions relating to our PSUs for fiscal 2013:
Expected term in years | 2.97 |
Volatility (%) | 50.11 |
Risk-free interest rate (%) | 0.67 |
Dividend rate (%) | — |
Schedule of Shares Reserved for Future Issuance [Table Text Block] | The following table presents the common stock reserved for future issuance (in 000’s):
| December 31, 2013
Outstanding stock options and RSUs | 19,720 |
Reserved for future stock option, RSU and other equity award grants | 27,412 |
Reserved for future ESPP issuances | 6,751 |
Total common stock reserved for future issuances | 53,883 |
Schedule of Share-based Payment Award, Employee Stock Purchase Plan, Valuation Assumptions [Table Text Block] | In determining the fair value of our ESPP, we use the Black-Scholes option pricing model that employs the following weighted-average assumptions:
| Fiscal Year
| 2013 |  | 2012 |  | 2011
Expected term in years | 0.5 |  |  | 0.5 |  |  | 0.5 |
Volatility (%) | 44.0 |  |  | 53.7 |  |  | 59.9 |
Risk-free interest rate (%) | 0.12 |  |  | 0.12 |  |  | 0.07 |
Dividend rate (%) | — |  |  | — |  |  | — |
Additional information related to the ESPP is provided below (in 000's, except per share amounts):
| Fiscal Year
| 2013 |  | 2012 |  | 2011
Weighted-average fair value per share granted ($) | 6.11 |  |  | 7.06 |  |  | 6.56 |
Shares issued under the ESPP | 672 |  |  | 577 |  |  | — |
Weighted-average price per share issued ($) | 18.88 |  |  | 18.90 |  |  | — |
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block] | Stock-based compensation expense is included in costs and expenses as follows ($ amounts in 000’s):
| Fiscal Year
| 2013 |  | 2012 |  | 2011
Cost of product revenue | 383 |  |  | 333 |  |  | 183 |
Cost of services revenue | 4,841 |  |  | 3,736 |  |  | 1,790 |
Research and development | 13,271 |  |  | 9,226 |  |  | 4,691 |
Sales and marketing | 19,526 |  |  | 12,793 |  |  | 9,325 |
General and administrative | 6,450 |  |  | 4,602 |  |  | 3,026 |
Total stock-based compensation expense | 44,471 |  |  | 30,690 |  |  | 19,015 |
The following table summarizes stock-based compensation expense by award type ($ amounts in 000’s)
| Fiscal Year
| 2013 |  | 2012 |  | 2011
Stock options | 20,806 |  |  | 24,506 |  |  | 17,416 |
RSUs | 18,968 |  |  | 1,714 |  |  | — |
ESPP | 4,697 |  |  | 4,470 |  |  | 1,599 |
Total stock-based compensation expense | 44,471 |  |  | 30,690 |  |  | 19,015 |
Income Tax Benefit from Stock Option Plans [Table Text Block] | Total income tax benefit associated with stock-based compensation that is recognized in the consolidated statements of operations is as follows ($ amounts in 000’s):
| Fiscal Year
| 2013 |  | 2012 |  | 2011
Income tax benefit associated with stock-based compensation | 8,331 |  |  | 5,870 |  |  | 3,822 |

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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. Tabular disclosure of the allocation of equity-based compensation costs to a given line item on the balance sheet and income statement for the period. This may include the reporting line for the costs and the amount capitalized and expensed. + References No definition available. + Details
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- Definition Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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