Stock-based Compensation Plans and Awards - Restricted Stock Unit Activity (Details) - Restricted stock units (RSUs) shares in Thousands |
9 Months Ended |
|---|---|
|
Sep. 30, 2016
shares
| |
| Restricted stock unit, Shares | |
| Unvested beginning balance | 977 |
| Granted | 1,885 |
| Vested | (509) |
| Forfeited | (356) |
| Unvested ending balance | 1,997 |