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Consolidated Statements of Changes in Shareholders' Equity (Parenthetical) - $ / shares | 6 Months Ended
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Jun. 30, 2015 | Jun. 30, 2014
Dividends declared per share (in dollars per share) | $ 0.36 | $ 0.33
Common stock issued in acquisition, shares | 4,933,115 |
Treasury stock issued for restricted awards, net of forfeitures | 87,841 | 80,455
Forfeitures of restricted stock, shares | 4,630 | 20,976

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