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

Equity (Summary of RSUs activity) (Details)

v3.8.0.1
Equity (Summary of RSUs activity) (Details) - Restricted Stock Units (RSUs) [Member]
3 Months Ended
Mar. 31, 2018
$ / shares
shares
Number of RSUs  
Unvested RSUs outstanding, beginning | shares 302,163
Forfeited | shares (17,569)
Vested | shares (60,317)
Unvested RSUs outstanding, ending | shares 224,277
Weighted Average Grant Date Fair Value  
Unvested RSUs outstanding, beginning | $ / shares $ 30.88
Forfeited | $ / shares 33.41
Vested | $ / shares 30.58
Unvested RSUs outstanding, ending | $ / shares $ 30.22