Current report of foreign issuer pursuant to Rules 13a-16 and 15d-16 Amendments

Equity (Summary of RSUs activity) (Details)

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Equity (Summary of RSUs activity) (Details)
9 Months Ended
Sep. 30, 2015
$ / shares
shares
Number of RSUs  
Unvested RSUs outstanding as of January 1, 2015 667,498
Granted 158,861
Forfeited (123,858)
Vested (84,818)
Unvested RSUs outstanding as of September 30, 2015 617,683
Weighted Average Grant Date Fair Value  
Unvested RSUs outstanding as of January 1, 2015 | $ / shares $ 94.19
Granted | $ / shares 48.13
Forfeited | $ / shares 92.11
Vested | $ / shares 97.37
Unvested RSUs outstanding as of September 30, 2015 | $ / shares $ 83.95