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Net Loss per Common Share (Tables) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2018 | Dec. 31, 2017
Earnings Per Share [Abstract] |  |
Anti-dilutive securities excluded from the computation of earnings per share | The following potentially dilutive securities were excluded from the computation of earnings per share as of March 31, 2018 and March 31, 2017 because their effects would be anti-dilutive:
|  | March 31, |
|  | 2018 |  |  | 2017 |
Warrants |  |  | 1,014,041 |  |  |  | 41 |
Total |  |  | 1,014,041 |  |  |  | 41 |
| Shares excluded from the computation of diluted EPS:
|  | 2017 |  |  | 2016 |  |  | 2015 |
Stock options |  |  | — |  |  |  | — |  |  |  | — |
Unvested restricted shares |  |  | — |  |  |  | — |  |  |  | — |
Warrants |  |  | 14,049 |  |  |  | 41 |  |  |  | 65 |
Total |  |  | 14,049 |  |  |  | 41 |  |  |  | 63 |

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- Definition Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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