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CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (Parenthetical) (USD $)
3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY    
Cash dividends (in dollars per share) $ 0.08  
Common stock sold by directors' deferred compensation plan (in shares) 3,368 83
Shares of common stock repurchased 3,405,888