Annual report pursuant to Section 13 and 15(d)

Consolidated Statements of Shareholders' Equity Consolidated Statements of Shareholders' Equity (Parenthetical)

v3.8.0.1
Consolidated Statements of Shareholders' Equity Consolidated Statements of Shareholders' Equity (Parenthetical) - $ / shares
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Dividends per share (in dollars per share) $ 0.60 $ 0.51 $ 0.48