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

Equity (Narrative) (Details)

v3.5.0.2
Equity (Narrative) (Details) - USD ($)
$ / shares in Units, $ in Millions
6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Options granted  
Weighted average fair value of options granted $ 12.36  
Number of options exercised 93,591 107,914
Increase in equity $ 0.7 $ 2.1
Stock option term 10 years  
Vesting period 4 years  
Unrecognized compensation cost $ 23.6  
Weighted average period for recognition 3 years  
Restricted Stock Units (RSUs) [Member]    
Options granted 0  
Unrecognized compensation cost $ 18.5  
Weighted average period for recognition 2 years 2 months 12 days