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Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2019
Accounting Policies [Abstract] |
Schedule of Estimated Fair Value Determined Using Option Pricing Model Assumptions |
|  | As of December 31, 2019 |  |  | As of December 31, 2018 |
Expected term |  | 1.1 years |  |  | 2.1 years |
Common stock market price |  | $ | 2.40 |  |  | $ | 14.50 |
Risk-free interest rate |  |  | 1.59 | % |  |  | 2.48 | %
Expected volatility |  |  | 168 | % |  |  | 125 | %
Resulting fair value (per warrant) |  | $ | 1.47 |  |  | $ | 6.50 |

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- Definition Tabular disclosure of input and valuation technique used to measure fair value and change in valuation approach and technique used to measure similar asset in prior period by class of asset or liability on non-recurring basis. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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