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Common Stock and Earnings per Share (Tables) | 12 Months Ended
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Dec. 31, 2015
Common Stock and Earnings per Share [Abstract] |
Schedule of Common Stock Outstanding |
|  | 2015
Shares outstanding at January 1 |  | 11,502,575 |
Issuance of common stock: |  |  |
Employee restricted stock grants |  | 26,542 |
Employee SARs exercised |  | 12,154 |
Directors' compensation |  | 7,675 |
Shares repurchased |  | (216,412 | )
Shares forfeited |  | (262 | )
Shares outstanding at December 31 |  | 11,332,272 |
Schedule of the Calculations of Basic and Diluted Earnings per Share |
|  |  | December 31,
(In thousands except share and per share data) |  |  | 2015 |  | 2014 |  | 2013
Basic |  |  |  |  |  |  |
Net income |  |  | $ | 23,056 |  |  | $ | 24,033 |  |  | $ | 23,497 |
Weighted average common shares outstanding |  |  |  | 11,358,609 |  |  |  | 11,479,025 |  |  |  | 11,441,158 |
Basic earnings per share |  |  | $ | 2.03 |  |  | $ | 2.09 |  |  | $ | 2.05 |
Diluted |  |  |  |  |  |  |  |  |  |  |  |  |
Net income |  |  | $ | 23,056 |  |  | $ | 24,033 |  |  | $ | 23,497 |
Weighted average common shares outstanding |  |  |  | 11,358,609 |  |  |  | 11,479,025 |  |  |  | 11,441,158 |
Effect of dilutive restricted stock and SARs |  |  |  | 159,819 |  |  |  | 164,954 |  |  |  | 199,581 |
Weighted average common shares outstanding |  |  |  |  |  |  |  |  |  |  |  |  |
assuming dilution |  |  |  | 11,518,428 |  |  |  | 11,643,979 |  |  |  | 11,640,739 |
Diluted earnings per share |  |  | $ | 2.00 |  |  | $ | 2.06 |  |  | $ | 2.02 |

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- Definition Tabular disclosure of the change in common stock outstanding. + References No definition available. + Details
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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + 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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