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Net Income per Common Share (Tables) | 12 Months Ended
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Dec. 31, 2015
Earnings Per Share [Abstract] |
Computation of basic and diluted net income per common share | The computation of basic and diluted net income per common share is as follows:
| December 31,
| 2015 |  | 2014 |  | 2013
Net income | $ | 12,050,000 |  |  | $ | 9,634,000 |  |  | $ | 6,866,000 |
Weighted average common shares outstanding — basic | 7,583,000 |  |  | 7,508,000 |  |  | 7,220,000 |
Effect of dilutive securities | 40,000 |  |  | 45,000 |  |  | 215,000 |
Weighted average common and potentially issuable common shares outstanding — diluted | 7,623,000 |  |  | 7,553,000 |  |  | 7,435,000 |
Basic net income per common share | $ | 1.59 |  |  | $ | 1.28 |  |  | $ | 0.95 |
Diluted net income per common share | $ | 1.58 |  |  | $ | 1.28 |  |  | $ | 0.92 |

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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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