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Earnings Per Share (Tables) | 9 Months Ended
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Sep. 30, 2013
Basic and Diluted Weighted Average Shares Outstanding | Basic and diluted weighted average shares outstanding were as follows:
|  | Three months ended September 30, |  |  | Nine months ended September 30, |
|  | 2013 |  |  | 2012 |  |  | 2013 |  |  | 2012 |
Weighted average common shares |  |  | 31,858,103 |  |  |  | 30,948,062 |  |  |  | 31,583,063 |  |  |  | 30,841,344 |
Dilutive common stock options |  |  | 693,483 |  |  |  | 308,211 |  |  |  | 699,639 |  |  |  | 290,405 |
Weighted average common shares, assuming dilution |  |  | 32,551,586 |  |  |  | 31,256,273 |  |  |  | 32,282,702 |  |  |  | 31,131,749 |

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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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