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Condensed Consolidated Statements Of Changes In Stockholders' Equity (Parenthetical) (USD $)
 9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Common dividends declared, per share $ 0.37 $ 0.36
Preferred dividends declared, per share $ 45 $ 45
Preferred stock converted to common stock, shares 6,900 134,550
Common stock options exercised, shares 554 789
Restricted stock awards shares 13,933 35,117
Purchase of treasury shares 132,773 335,192
Treasury stock shares acquired cost per share $ 16.29 $ 15.52