Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidated Statements of Changes in Equity (Unaudited) (Parenthetical)

v3.7.0.1
Condensed Consolidated Statements of Changes in Equity (Unaudited) (Parenthetical) - $ / shares
6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Class A Common Stock    
Common stock dividends, per share $ 0.24 $ 0.24