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Summary of Significant Accounting Policies - Schedule of Computation of Potentially Dilutive Securities (Details) - shares | 9 Months Ended
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Sep. 30, 2019 | Sep. 30, 2018
Total potential dilutive securities (in shares) | 8,865,489 | 4,783,281
Convertible note - principal |  |
Total potential dilutive securities (in shares) | 0 | 702,247
Options to purchase common stock |  |
Total potential dilutive securities (in shares) | 3,623,138 | 1,632,483
Unvested restricted stock units |  |
Total potential dilutive securities (in shares) | 403,154 | 107,723
Financing warrants to purchase common stock |  |
Total potential dilutive securities (in shares) | 4,839,197 | 2,340,828

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- Definition Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -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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