|
Equity Compensation (Details) (Stock options, USD $)
|
9 Months Ended |
0 Months Ended |
|
|
Sep. 30, 2014
|
Jan. 02, 2014
2013 Plan
|
Jun. 11, 2013
2013 Plan
|
| Stock options |
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|
|
| Annual increase in shares authorized for issuance as a percentage of shares outstanding as of the preceding December 31 |
|
|
5.00% |
| Increase in number of shares authorized for issuance |
|
1,139,255 |
|
| Shares Subject to Options Outstanding |
|
|
|
| Balance at the beginning of the period (in shares) |
4,905,214 |
|
|
| Granted (in shares) |
1,060,278 |
|
|
| Exercised (in shares) |
(1,077,534) |
|
|
| Expired (in shares) |
(136) |
|
|
| Forfeited (in shares) |
(69,338) |
|
|
| Balance at the end of the period (in shares) |
4,818,484 |
|
|
| Exercisable options (in shares) |
2,786,424 |
|
|
| Vested and expected to vest at the end of the period (in shares) |
4,627,382 |
|
|
| Weighted Average Grant Date Fair Value |
|
|
|
| Granted (in dollars per share) |
$ 10.91 |
|
|
| Weighted Average Exercise Price |
|
|
|
| Balance at the beginning of the period (in dollars per share) |
$ 6.31 |
|
|
| Granted (in dollars per share) |
$ 19.34 |
|
|
| Exercised (in dollars per share) |
$ 4.29 |
|
|
| Expired (in dollars per share) |
$ 7.40 |
|
|
| Forfeited (in dollars per share) |
$ 15.53 |
|
|
| Balance at the end of the period (in dollars per share) |
$ 9.47 |
|
|
| Exercisable options at the end of the period (in dollars per share) |
$ 5.86 |
|
|
| Vested and expected to vest (in dollars per share) |
$ 9.21 |
|
|
| Weighted-Average Remaining Contractual Life |
|
|
|
| Exercisable options |
5 years 1 month 6 days |
|
|
| Vested and expected to vest |
6 years 6 months |
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|