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Consolidated Statements Of Changes In Shareholders' Equity (Parentheticals) (USD $) | 12 Months Ended
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Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Common stock, shares issued | 32,765 | 26,500 | 16,047
Cash dividends per share (in Dollars per share) | $ 1.09 | $ 0.84 | $ 0.84
Common stock issued through dividend reinvestment | 2,883 |  |
Common Stock [Member] |  |  |
Common stock, shares issued | 32,765 | 26,500 | 16,047
Cash dividends per share (in Dollars per share) | $ 1.09 | $ 0.84 | $ 0.84
Common stock issued through dividend reinvestment | 2,883 |  |

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