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Note 2 - Loss (Income) Per Share | 9 Months Ended
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Sep. 30, 2019
Notes to Financial Statements |
Earnings Per Share [Text Block] | 2. Loss (income) per share Basic (loss) income per share is computed by dividing net (loss) income by the weighted average number of common shares outstanding during the period, in addition to restricted stock units ("RSUs") and restricted common stock that are vested but not delivered. Diluted (loss) income per share reflects the potential dilution that could occur if securities or other contracts to issue common stock are exercised or converted into common stock, and is calculated using the treasury stock method for stock options, restricted stock units, restricted stock, warrants and deferred common stock. Common equivalent shares are excluded from the calculation in loss periods, as their effects would be anti-dilutive. For the three and nine months ended September 30, 2019 and 2018 , basic and diluted (loss) income per share was as follows:
|  | Three Months Ended September 30, |  |  | Nine Months Ended September 30, |
|  | 2019 |  |  | 2018 |  |  | 2019 |  |  | 2018 |
Numerator: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net (loss) income from continuing operations |  | $ | (4,463 | ) |  | $ | 4,462 |  |  | $ | (2,703 | ) |  | $ | 1,549 |
Net loss from discontinued operations |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (21,124 | )
Net (loss) income |  | $ | (4,463 | ) |  | $ | 4,462 |  |  | $ | (2,703 | ) |  | $ | (19,575 | )
Denominator: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted average shares outstanding |  |  | 76,769,339 |  |  |  | 75,289,662 |  |  |  | 76,296,825 |  |  |  | 72,657,052 |
Weighted average restricted shares vested not delivered |  |  | 2,799,871 |  |  |  | 2,909,971 |  |  |  | 3,092,306 |  |  |  | 3,345,462 |
Total basic and diluted weighted average shares outstanding |  |  | 79,569,210 |  |  |  | 78,199,633 |  |  |  | 79,389,131 |  |  |  | 76,002,514 |
Basic and diluted (loss) earnings per share |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Continuing operations |  | $ | (0.06 | ) |  | $ | 0.06 |  |  | $ | (0.03 | ) |  | $ | 0.02 |
Discontinued operations |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | (0.28 | )
Net (loss) income |  | $ | (0.06 | ) |  | $ | 0.06 |  |  | $ | (0.03 | ) |  | $ | (0.26 | )
The following potentially dilutive securities were excluded from the calculation of diluted (loss) income per share, as their effects would have been anti-dilutive for the periods presented:
|  | Three Months Ended September 30, |  |  | Nine Months Ended September 30, |
|  | 2019 |  |  | 2018 |  |  | 2019 |  |  | 2018 |
Restricted stock units |  |  | 3,794,227 |  |  |  | 3,842,631 |  |  |  | 3,794,227 |  |  |  | 3,842,631 |
Stock options |  |  | 2,120,000 |  |  |  | 2,623,776 |  |  |  | 2,120,000 |  |  |  | 2,623,776 |
Warrants |  |  | 2,398,776 |  |  |  | 112,000 |  |  |  | 2,398,776 |  |  |  | 112,000 |
Total anti-dilutive securities |  |  | 8,313,003 |  |  |  | 6,578,407 |  |  |  | 8,313,003 |  |  |  | 6,578,407 |

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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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