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Earnings per Share (Tables) | 12 Months Ended
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Dec. 31, 2015
Earnings Per Share [Abstract] |
Basic and Diluted Shares of Consolidated Condensed Statements of Income | The Company’s diluted earnings per share give effect to all potential common shares outstanding during a period that do not have an anti-dilutive impact to the calculation. The following summarizes the shares included in the dilutive shares as disclosed in the statements of income:
|  | Year ended December 31, |
|  | 2015 |  |  | 2014 |  |  | 2013 |
Weighted average number of shares for calculation of basic EPS – Common Stock |  |  | 36,031,792 |  |  |  | 35,411,608 |  |  |  | 33,652,646 |
Stock options under equity incentive plans |  |  | 443,310 |  |  |  | 637,723 |  |  |  | 470,995 |
Weighted average number of shares for calculation of diluted EPS – Common Stock |  |  | 36,475,102 |  |  |  | 36,049,331 |  |  |  | 34,123,641 |
Common Stock Issuable upon Exercise of Certain Stock Options | The accompanying table represents Common Stock issuable upon the exercise of certain stock options and that have been excluded from the diluted earnings calculation because the effect of their inclusion would be anti-dilutive.
|  | Year ended December 31, |
|  | 2015 |  |  | 2014 |  |  | 2013 |
Stock options outstanding for equity incentive plans |  |  | 17,534 |  |  |  | 155,000 |  |  |  | 550,000 |

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- Definition Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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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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