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Earnings per share | 9 Months Ended
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Sep. 30, 2014
Earnings Per Share [Abstract] |
Earnings per share | 11. Earnings per share For the three and nine months ended September 30, 2014 and 2013, there were no adjustments to net income (loss) for purposes of calculating basic and diluted net income (loss) available to common shareholders. The following is a reconciliation of the weighted average shares used in the basic and diluted net income (loss) per common share computations.
|  | Three Months Ended September 30, |  |  | Nine Months Ended September 30, |
|  | 2014 |  |  | 2013 |  |  | 2014 |  |  | 2013 |
Weighted average common shares-basic |  |  | 18,577,540 |  |  |  | 18,142,935 |  |  |  | 18,408,172 |  |  |  | 18,897,887 |
Effect of dilutive securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unexercised stock options net of treasury share repurchase |  |  | 195,846 |  |  |  | — |  |  |  | 156,284 |  |  |  | — |
Weighted average common shares-diluted |  |  | 18,773,386 |  |  |  | 18,142,935 |  |  |  | 18,564,522 |  |  |  | 18,897,887 |
Options to purchase shares of common stock with exercise prices in excess of the average market price of common shares are not included in the computation of diluted earnings per share. There were 1,023,038 and 1,055,422 outstanding options not included in the diluted earnings per share computation for the three and nine months ended September 30, 2014, respectively, because the inclusion of these options was antidilutive. There were 1,647,878 and 1,186,259 outstanding options not included, respectively, in the diluted earnings per share computation for the three and nine months ended September 30, 2013, respectively, because the inclusion of these options was anti-dilutive.

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