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Net Loss Per Share | 12 Months Ended
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Dec. 31, 2018
Earnings Per Share [Abstract] |
Net Loss Per Share | (2) Net Loss Per Share The Company calculates basic loss per share by dividing net loss by the weighted average common shares outstanding during the period. Diluted loss per share is computed by dividing net loss by the weighted average number of common shares outstanding during the period increased to include, if dilutive, the number of additional common shares that would have been outstanding if the potential common shares had been issued. The Company’s potentially dilutive shares include stock options, restricted stock units and warrants for common stock. Because the Company reported a net loss for the years ended December 31, 2018 and 2017, all potentially dilutive shares of common stock have been excluded from the computation of the dilutive net loss per share for all periods presented. Such potentially dilutive shares of common stock consist of the following:
| Years Ended December 31, |
| 2018 |  |  | 2017 |
Potentially dilutive securities, excluded: |  |  |  |  |  |  |
Outstanding stock options |  | 604,003 |  |  |  | 611,975 |
Unvested restricted stock units |  | — |  |  |  | 15,168 |
Warrants to purchase common stock |  | 2,669,855 |  |  |  | 3,633,008 |
|  | 3,273,858 |  |  |  | 4,260,151 |

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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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