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Warrants (Tables) | 6 Months Ended
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Jun. 30, 2018
Warrants |
Summary of Warrant Activity | Following is a summary of all warrant activity for the six months ended June 30, 2018:
Warrants |  | Number of Warrants Issued |  |  | Weighted Average Exercise Price |
Warrants outstanding at December 31, 2017 |  |  | 3,058,402 |  |  | $ | 5.29 |
Warrants issued during the six months ended June 30, 2018 (see Note 10) |  |  | 190,114 |  |  | $ | 2.63 |
Warrants outstanding at June 30, 2018 |  |  | 3,248,516 |  |  | $ | 5.14 |
Aggregate intrinsic value of outstanding warrants at June 30, 2018 |  | $ | 119,686 |  |  |  |  |
Weighted average remaining contractual terms at June 30, 2018 (in years) |  |  | 3.49 |  |  |  |  |

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