Stock-based Awards - Narrative (Details)
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1 Months Ended |
3 Months Ended |
12 Months Ended |
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Nov. 30, 2015
USD ($)
$ / shares
shares
|
Dec. 31, 2015
USD ($)
equity_incentive_plan
$ / shares
shares
|
May. 31, 2014
shares
|
Dec. 31, 2015
USD ($)
former_executive
equity_incentive_plan
$ / shares
shares
|
Mar. 31, 2015
shares
|
Dec. 31, 2015
USD ($)
equity_incentive_plan
$ / shares
shares
|
Dec. 31, 2014
USD ($)
$ / shares
shares
|
Dec. 31, 2013
USD ($)
$ / shares
shares
|
Dec. 31, 2012
$ / shares
shares
|
| Stock-based Awards |
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| Number of equity incentive plans | equity_incentive_plan |
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4
|
|
4
|
|
4
|
|
|
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| Shares canceled and available for future issuance |
|
3,095,368
|
|
3,095,368
|
|
3,095,368
|
|
|
|
| Total stock-based compensation expense | $ |
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|
|
|
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$ 42,563,000
|
$ 29,333,000
|
$ 9,346,000
|
|
| Outstanding stock options (in shares) |
|
24,277,901
|
|
24,277,901
|
|
24,277,901
|
|
|
|
| Number of non-vested RSUs (in shares) |
|
3,747,340
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|
3,747,340
|
|
3,747,340
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| Former CEO |
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| Stock-based Awards |
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|
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|
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| Shares canceled and available for future issuance |
1,333,332
|
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|
|
|
|
|
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| Total stock-based compensation expense | $ |
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|
|
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|
$ 7,700,000
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| Weighted average exercise price (in dollars per share) | $ / shares |
$ 45.00
|
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| Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares |
1,401,553
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| Payments for surrender and cancellation of options | $ |
$ 100,000
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|
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| Former Executive |
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| Stock-based Awards |
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| Total stock-based compensation expense | $ |
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|
|
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$ 3,000,000
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| Number of former executives | former_executive |
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4
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|
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| Former President |
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| Stock-based Awards |
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|
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|
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| Shares canceled and available for future issuance |
|
309,722
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|
309,722
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|
309,722
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|
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| Total stock-based compensation expense | $ |
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|
$ 2,100,000
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|
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| Weighted average exercise price (in dollars per share) | $ / shares |
|
$ 13.17
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|
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| Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares |
|
252,431
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|
252,431
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|
252,431
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| Common Stock |
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| Stock-based Awards |
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| Closing price of common stock (in dollars per share) | $ / shares |
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$ 9.54
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$ 9.54
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$ 9.54
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| Options to Purchase Common Stock |
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| Stock-based Awards |
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|
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| Shares of common stock, grants to purchase |
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|
|
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4,983,099
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| Total remaining stock-based compensation expense for unvested option awards | $ |
|
$ 32,800,000
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$ 32,800,000
|
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$ 32,800,000
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| Weighted-average period |
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2 years 10 months 2 days
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| Weighted-average grant-date fair value per share of options granted (in dollars per share) | $ / shares |
|
|
|
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$ 4.76
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$ 6.32
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$ 4.79
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| Total stock-based compensation expense | $ |
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|
|
|
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$ 34,000,000
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$ 27,200,000
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$ 8,900,000
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| Total intrinsic value of options exercised | $ |
|
|
|
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19,200,000
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57,100,000
|
600,000
|
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| Excess tax benefits | $ |
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$ 0
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$ 0
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$ 0
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| Weighted average exercise price (in dollars per share) | $ / shares |
|
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$ 9.98
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|
|
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| Outstanding stock options (in shares) |
|
24,277,901
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|
24,277,901
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|
24,277,901
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25,589,876
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| Weighted average exercise price (in dollars per share) | $ / shares |
|
$ 8.12
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|
$ 8.12
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$ 8.12
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$ 9.79
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| Options to Purchase Common Stock | Stock Options Performance 1 |
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| Stock-based Awards |
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| Shares of common stock, grants to purchase |
|
|
|
|
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82,327
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| Options to Purchase Common Stock | Stock Options Performance 1 | Executives |
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| Stock-based Awards |
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| Shares of common stock, grants to purchase |
|
|
|
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166,665
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| Weighted average exercise price (in dollars per share) | $ / shares |
|
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$ 11.51
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| Options to Purchase Common Stock | Stock Options Performance 2 |
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| Stock-based Awards |
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| Shares of common stock, grants to purchase |
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|
|
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2,776,114
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1,683,548
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| Vesting period |
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48 months
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| Weighted average exercise price (in dollars per share) | $ / shares |
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$ 12.81
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| Outstanding stock options (in shares) |
|
|
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|
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2,241,796
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| Weighted average exercise price (in dollars per share) | $ / shares |
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$ 12.81
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| Shares forfeited |
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|
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288,406
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| Options to Purchase Common Stock | Stock Options Performance |
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| Stock-based Awards |
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| Shares of common stock, grants to purchase |
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|
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1,765,875
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| Weighted average exercise price (in dollars per share) | $ / shares |
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$ 8.85
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| Grant date fair values of awards | $ |
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$ 20,100,000
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$ 8,800,000
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| Restricted Stock Awards |
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| Stock-based Awards |
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| Total stock-based compensation expense | $ |
|
|
|
|
|
|
200,000
|
400,000
|
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| Fair value of shares of restricted stock awards vested | $ |
|
|
|
|
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|
800,000
|
$ 700,000
|
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| Restricted Stock Units (RSUs) |
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| Stock-based Awards |
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| Total remaining stock-based compensation expense for unvested option awards | $ |
|
$ 23,900,000
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|
$ 23,900,000
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$ 23,900,000
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| Weighted-average period |
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|
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3 years 6 months 15 days
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| Total stock-based compensation expense | $ |
|
|
|
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|
$ 8,600,000
|
2,000,000
|
|
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| Fair value of shares of restricted stock awards vested | $ |
|
|
|
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$ 6,500,000
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$ 300,000
|
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| Weighted average grant date fair value (in dollars per share) | $ / shares |
|
|
|
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$ 8.17
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$ 12.35
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| Shares granted |
|
|
|
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|
3,980,079
|
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| Number of non-vested RSUs (in shares) |
|
3,747,340
|
|
3,747,340
|
|
3,747,340
|
827,997
|
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| Weighted average grant date fair value (in dollars per share) | $ / shares |
|
$ 8.18
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$ 8.18
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$ 8.18
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$ 12.36
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| Restricted Stock Units (RSUs) | Former CEO |
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|
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| Stock-based Awards |
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|
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| Number of non-vested RSUs (in shares) |
154,088
|
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| Restricted Stock Units (RSUs) | Former Executive |
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|
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| Stock-based Awards |
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| Shares of common stock, accelerated vesting of stock |
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|
48,113
|
|
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| Restricted Stock Units (RSUs) | Former President |
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|
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|
|
|
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| Stock-based Awards |
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|
|
|
|
|
|
|
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| Number of non-vested RSUs (in shares) |
|
57,679
|
|
57,679
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|
57,679
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|
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| Stock Option | Former Executive |
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|
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|
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| Stock-based Awards |
|
|
|
|
|
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| Shares of common stock, accelerated vesting of stock |
|
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337,111
|
|
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| Restricted Stock Units Containing Two Step Vesting Condition |
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| Stock-based Awards |
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| Vesting period |
|
|
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4 years
|
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| Shares forfeited |
|
|
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|
73,939
|
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| Weighted average grant date fair value (in dollars per share) | $ / shares |
|
|
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|
$ 10.04
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| Shares granted |
|
|
|
|
|
|
720,146
|
|
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| Number of non-vested RSUs (in shares) |
|
|
|
|
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|
583,537
|
|
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| Weighted average grant date fair value (in dollars per share) | $ / shares |
|
|
|
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|
$ 10.07
|
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| 2005 Plan |
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| Stock-based Awards |
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| Shares of common stock reserved for future issuance |
|
|
|
|
|
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|
604,093
|
|
| 2008 Plan |
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|
|
|
|
|
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| Stock-based Awards |
|
|
|
|
|
|
|
|
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| Shares canceled and available for future issuance |
|
|
|
|
|
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|
0
|
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| 2014 Plan |
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|
|
|
|
|
|
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| Stock-based Awards |
|
|
|
|
|
|
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| Annual increase in the number of shares available for future issuance under the terms of the plan agreement |
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|
10,000,000
|
|
|
|
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| Annual increase in the number of shares available for future issuance expressed as a percentage of the total outstanding shares of common stock as of the last day of the previous fiscal year |
|
|
5.00%
|
|
|
|
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| 2014 Plan | Options to Purchase Common Stock |
|
|
|
|
|
|
|
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| Stock-based Awards |
|
|
|
|
|
|
|
|
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| Vesting period |
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|
4 years
|
|
|
|
|
|
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| Expiration period |
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|
10 years
|
|
|
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| 2014 Plan | Restricted Stock Units (RSUs) | Minimum |
|
|
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|
|
|
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| Stock-based Awards |
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|
|
|
|
|
|
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| Vesting period |
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|
4 years
|
|
|
|
|
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| 2014 Plan | Restricted Stock Units (RSUs) | Maximum |
|
|
|
|
|
|
|
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| Stock-based Awards |
|
|
|
|
|
|
|
|
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| Vesting period |
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5 years
|
|
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| Inducement Plan |
|
|
|
|
|
|
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| Stock-based Awards |
|
|
|
|
|
|
|
|
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| Shares canceled and available for future issuance |
|
0
|
|
0
|
|
0
|
|
|
|
| Shares of common reserved for issuance under non-qualified stock options |
|
1,840,000
|
|
1,840,000
|
|
1,840,000
|
|
|
|
| Shares of common stock, grants to purchase |
|
|
|
|
|
1,840,000
|
|
|
|
| Vesting period |
|
|
|
|
|
4 years
|
|
|
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| Expiration period |
|
|
|
|
|
10 years
|
|
|
|