Restricted stock units (thousands) | Restricted stock units (thousands) | Restricted stock units (thousands) | ||||||
2017 | 2016 | 2015 | ||||||
At January 1 | 1,000 | 1,018 | 861 | |||||
Granted (1) | 488 | 464 | 626 | |||||
Forfeited | (29 | ) | (29 | ) | (37 | ) | ||
Vested | (490 | ) | (453 | ) | (432 | ) | ||
At December 31 | 969 | 1,000 | 1,018 |