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Net Income Per Share | 9 Months Ended
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Sep. 30, 2016
Earnings Per Share [Abstract] |
Net Income Per Share | Note 4. Net Income Per Share
|  | Three Months Ended September 30, |  |  | Nine Months Ended September 30, |
|  | 2016 |  |  | 2015 |  |  | 2016 |  |  | 2015 |
Net income |  | $ | 4,147 |  |  | $ | 4,630 |  |  | $ | 4,879 |  |  | $ | 17,584 |
Weighted average shares outstanding |  |  | 27,159 |  |  |  | 26,839 |  |  |  | 26,973 |  |  |  | 20,122 |
Effect of dilutive stock options |  |  | 163 |  |  |  | 328 |  |  |  | 130 |  |  |  | 345 |
Diluted shares outstanding |  |  | 27,322 |  |  |  | 27,167 |  |  |  | 27,103 |  |  |  | 20,467 |
Basic net income per share |  | $ | 0.15 |  |  | $ | 0.17 |  |  | $ | 0.18 |  |  | $ | 0.87 |
Diluted net income per share |  | $ | 0.15 |  |  | $ | 0.17 |  |  | $ | 0.18 |  |  | $ | 0.86 |
For both the three and nine month periods ended September 30, 2016, approximately 0.6 million and 0.7 million potentially dilutive stock options, respectively, had the effect of being anti-dilutive and were excluded from the calculation of diluted earnings per share. For both the three and nine month periods ended September 30, 2015, approximately 0.7 million potentially dilutive stock options had the effect of being anti-dilutive and were excluded from the calculation of diluted earnings per share.

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