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

Equity (Schedule of Stock Option Activity) (Details)

v3.7.0.1
Equity (Schedule of Stock Option Activity) (Details)
 12 Months Ended
Dec. 31, 2016
$ / shares
shares
Number of Options  
Options Outstanding as of December 31, 2015 | shares 2,449,742
Granted | shares 559,340
Exercised | shares (119,564)
Forfeited | shares (274,057)
Options Outstanding as of December 31, 2016 | shares 2,615,461
Options exercisable as of December 31, 2016 | shares 1,426,304
Weighted Average Exercise Price  
Options Outstanding as of December 31, 2015 | $ / shares $ 39.73
Granted | $ / shares 23.03
Exercised | $ / shares 9.91
Forfeited | $ / shares 42.74
Options Outstanding as of December 31, 2016 | $ / shares 37.21
Options exercisable as of December 31, 2016 | $ / shares $ 38.63