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CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS EQUITY (Parenthetical) - $ / shares | 6 Months Ended
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Jun. 30, 2015 | Jun. 30, 2014
Common dividends declared, per share | $ 0.26 | $ 0.24
Preferred dividends declared, per share | $ 15.00 | $ 30.00
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 | 21,590 | 13,433
Issuance of treasury stock to 401(k) plan, shares | 12,968 |
Purchase of treasury shares | 684,407 | 131,500
Treasury stock shares acquired cost per share | $ 16.78 | $ 16.30

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