2013 | 2012 | 2011 | |||||||||||||||
Weighted - | Weighted - | Weighted - | |||||||||||||||
Average | Average | Average | |||||||||||||||
Shares | Exercise Price | Shares | Exercise Price | Shares | Exercise Price | ||||||||||||
Outstanding at beginning of year | 13,376,277 | $ | 10.56 | 13,525,832 | $ | 10.48 | 963,034 | $ | 2.91 | ||||||||
Granted | 17,030,622 | $ | 8.50 | — | $ | — | 13,391,655 | $ | 10.56 | ||||||||
Exercised, forfeited, or expired | (13,237,889 | ) | $ | 10.50 | (149,555 | ) | $ | 3.32 | (828,857 | ) | $ | 2.97 | |||||
Outstanding at end of year | 17,169,010 | $ | 8.56 | 13,376,277 | $ | 10.56 | 13,525,832 | $ | 10.48 | ||||||||
Exercisable at end of year | 17,169,010 | $ | 8.56 | 13,376,277 | $ | 10.56 | 13,525,832 | $ | 10.48 | ||||||||