Summary of Significant Accounting Policies (Details 2) - shares |
3 Months Ended | |
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Mar. 31, 2019 |
Mar. 31, 2018 |
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| Total common stock equivalents excluded from diluted net loss per share | 16,331,908 | 19,553,947 |
| Convertible Debt [Member] | ||
| Total common stock equivalents excluded from diluted net loss per share | 3,700,000 | 3,100,000 |
| Stock Options [Member] | ||
| Total common stock equivalents excluded from diluted net loss per share | 8,526,510 | 9,216,184 |
| Warrants [Member] | ||
| Total common stock equivalents excluded from diluted net loss per share | 4,105,398 | 7,237,763 |
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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. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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