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Net Income (Loss) Per Share | 6 Months Ended
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Jun. 30, 2019
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 and the as-if-converted method, as applicable. The following table presents the computation of net income (loss) per share:
|  | Three Months Ended June 30, |  |  | Six Months Ended June 30, |
|  | 2019 |  |  | 2018 |  |  | 2019 |  |  | 2018 |
Numerator: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income (loss) (in thousands) |  | $ | 662 |  |  | $ | (3,190 | ) |  | $ | 998 |  |  | $ | (4,296 | )
Denominator: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted average common shares outstanding - basic |  |  | 9,696,876 |  |  |  | 9,439,025 |  |  |  | 9,661,474 |  |  |  | 9,459,272 |
Plus dilutive effect of potential common shares |  |  | 430,843 |  |  |  | — |  |  |  | 409,826 |  |  |  | — |
Weighted average common shares outstanding - diluted |  |  | 10,127,719 |  |  |  | 9,439,025 |  |  |  | 10,071,300 |  |  |  | 9,459,272 |
Net income (loss) per share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic |  | $ | 0.07 |  |  | $ | (0.34 | ) |  | $ | 0.10 |  |  | $ | (0.45 | )
Diluted |  | $ | 0.07 |  |  | $ | (0.34 | ) |  | $ | 0.10 |  |  | $ | (0.45 | )
Diluted weighted average common shares outstanding for the three months ended June 30, 2019 includes 8,528 warrants and 422,315 options outstanding. Diluted weighted average common shares outstanding for the six months ended June 30, 2019 includes 4,614 warrants and 405,212 options outstanding. Potentially dilutive securities not included in the calculation of diluted net income (loss) per share because to do so would be anti-dilutive are as follows:
|  | Three Months Ended June 30, |  |  | Six Months Ended June 30, |
|  | 2019 |  |  | 2018 |  |  | 2019 |  |  | 2018 |
Employee stock options |  |  | 67,104 |  |  |  | 1,152,520 |  |  |  | 257,981 |  |  |  | 1,349,833 |
Warrants outstanding |  |  | — |  |  |  | 51,003 |  |  |  | — |  |  |  | 51,003 |
Total |  |  | 67,104 |  |  |  | 1,203,523 |  |  |  | 257,981 |  |  |  | 1,400,836 |

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 + Details
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