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CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (Parenthetical) - $ / shares
3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Statement of Stockholders' Equity [Abstract]    
Cash dividends (in dollars per share) $ 0.16 $ 0.14
Common stock (purchased) sold by directors' deferred compensation plan (in net shares) 0 5,000
Shares of common stock repurchased 113,750 233,722