|
Stock-Based Compensation - Summary of RSUs (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
|
12 Months Ended |
|
Dec. 31, 2013
|
Dec. 31, 2012
|
| Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] |
|
|
| Shares, vested and expected to vest as of December 31, 2013 |
6,028,954 |
|
| Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward] |
|
|
| Weighted average exercise price, vested and expected to vest as of December 31, 2013 |
$ 4.77 |
|
|
RSUs
|
|
|
| Stock-based compensation |
|
|
| Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Share-based Awards Other than Options |
$ 4,219 |
|
| Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] |
|
|
| Shares, beginning balance |
254,863 |
0 |
| Shares, granted |
814,000 |
274,070 |
| Shares, vested |
(74,985) |
0 |
| Shares, forfeited |
(143,527) |
(19,207) |
| Shares, ending balance |
850,351 |
254,863 |
| Shares, vested and expected to vest as of December 31, 2013 |
695,488 |
|
| Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward] |
|
|
| Weighted average grant-date fair value, beginning balance |
$ 6.48 |
$ 0.00 |
| Weighted average grant-date fair value, granted |
$ 8.47 |
$ 6.48 |
| Weighted average grant-date fair value, vested |
$ 0.00 |
$ 0.00 |
| Weighted average grant-date fair value, forfeited |
$ 8.56 |
$ 6.49 |
| Weighted average grant-date fair value, ending balance |
$ 7.99 |
$ 6.48 |