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Net Income (Loss) Per Share | 9 Months Ended
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Sep. 30, 2020
Earnings Per Share [Abstract] |
Net Income (Loss) Per Share | Note 3. Net Income (Loss) Per Share Basic net income (loss) per share is calculated by dividing net income (loss) by the weighted average shares of common stock outstanding for the period. Diluted net income (loss) per share is calculated by dividing net income (loss) by the weighted average shares of common stock outstanding for the period plus amounts representing the dilutive effect of securities that are convertible into common stock. The Company calculates diluted income (loss) per common share using the treasury stock method. The following table presents the computation of net income (loss) per share (in thousands except per share data):
|  | Three months ended September 30, |  |  | Nine months ended September 30, |
|  | 2020 |  |  | 2019 |  |  | 2020 |  |  | 2019 |
Numerator: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income (loss) |  | $ | (261 | ) |  | $ | (135 | ) |  | $ | (2,199 | ) |  | $ | 863 |
Denominator: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted average common shares outstanding - basic |  |  | 9,710 |  |  |  | 9,711 |  |  |  | 9,694 |  |  |  | 9,678 |
Plus dilutive effect of potential common shares |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 405 |
Weighted average common shares outstanding - diluted |  |  | 9,710 |  |  |  | 9,711 |  |  |  | 9,694 |  |  |  | 10,083 |
Net income (loss) per share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic |  | $ | (0.03 | ) |  | $ | (0.01 | ) |  | $ | (0.23 | ) |  | $ | 0.09 |
Diluted |  | $ | (0.03 | ) |  | $ | (0.01 | ) |  | $ | (0.23 | ) |  | $ | 0.09 |
Diluted weighted average common shares outstanding for the nine months ended September 30, 2019 includes 3,000 warrants and 402,000 options. Potentially dilutive securities (in common stock equivalent shares) not included in the calculation of diluted net income (loss) per share because to do so would be anti-dilutive are as follows (in thousands):
|  | Three months ended September 30, |  |  | Nine months ended September 30, |
|  | 2020 |  |  | 2019 |  |  | 2020 |  |  | 2019 |
Stock options and restricted stock |  |  | 1,451 |  |  |  | 721 |  |  |  | 1,622 |  |  |  | 457 |
Warrants outstanding |  |  | 3 |  |  |  | 51 |  |  |  | 51 |  |  |  | — |
Total |  |  | 1,454 |  |  |  | 772 |  |  |  | 1,673 |  |  |  | 457 |

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