Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Equity (Schedule of Stock Option Activity) (Details)

v3.3.1.900
Equity (Schedule of Stock Option Activity) (Details)
12 Months Ended
Dec. 31, 2015
$ / shares
shares
Number of Options  
Options Outstanding as of December 31, 2014 | shares 1,719,241
Granted | shares 1,020,951
Exercised | shares (164,678)
Forfeited | shares (125,772)
Options Outstanding as of December 31, 2015 | shares 2,449,742
Options exercisable as of December 31, 2015 | shares 1,064,712
Weighted Average Exercise Price  
Options Outstanding as of December 31, 2014 | $ / shares $ 43.89
Granted | $ / shares 32.78
Exercised | $ / shares 17.44
Forfeited | $ / shares 69.36
Options Outstanding as of December 31, 2015 | $ / shares 39.73
Options exercisable as of December 31, 2015 | $ / shares $ 32.58