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Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2012
Summary Of Significant Accounting Policies [Abstract] |
Summary of weighted average number of shares used in computing earnings per common share and effect on weighted average number of shares of dilutive potential common stock | The following shows the weighted average number of shares used in computing earnings per common share and the effect on the weighted average number of shares of dilutive potential common stock. Potential dilutive common stock had no effect on income available to common stockholders.
|  | 2012 |  | 2011 |  | 2010 |
Average number of common shares outstanding |  | 6,942,411 |  | 6,936,869 |  | 6,933,474 |
Effect of dilutive options |  | 17,456 |  | 13,994 |  | 16,462 |
Average number of common shares outstanding used to calculate diluted earnings per common share |  | 6,959,867 |  | 6,950,863 |  | 6,949,936 |

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- Definition Tabular disclosure of the weighted average number of shares used in calculating basic net earnings per share (or unit) and diluted earnings per share (or unit). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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