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Consolidated Statements of Changes in Shareholders' Equity (Unaudited) (Parenthetical) - $ / shares | 6 Months Ended
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Jun. 30, 2016 | Jun. 30, 2015
Statement of Stockholders' Equity [Abstract] |  |
Dividends declared per share (in dollars per share) | $ 0.38 | $ 0.36
Common stock issued in acquisition (in shares) |  | 4,933,115
Treasury stock issued for restricted awards, net of forfeitures (in shares) | 110,643 | 87,841
Forfeitures of restricted stock (in shares) | 4,659 | 4,630

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