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CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS EQUITY (Parenthetical) - $ / shares | 9 Months Ended
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Sep. 30, 2015 | Sep. 30, 2014
Common dividends declared, per share | $ 0.40 | $ 0.37
Preferred dividends declared, per share | $ 15.00 | $ 45.00
Preferred stock converted to common stock, shares | 882,096 | 6,900
Redemption of preferred stock, shares | 2,367 |
Common stock options exercised, shares | 3,000 | 554
Restricted stock awards shares | 22,561 | 13,933
Issuance of treasury stock to 401(k) plan, shares | 18,275 |
Purchase of treasury shares | 1,018,726 | 132,773
Treasury stock shares acquired cost per share | $ 17.13 | $ 16.29

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