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Stockholders' Equity - Schedule of Warrants Outstanding at Various Exercise Prices (Details) - $ / shares | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Warrant outstanding |  | 70,000 |  |
Warrant exercise price |  | $ 5.00 | $ 5.00 | $ 5.00
2015 Financing [Member] |  |  |  |
Warrant outstanding | [1] | 20,000 |  |
Warrant exercise price | [1] | $ 6.05 |  |
Warrants expiration date | [1] | Jul. 31, 2020 |  |
2015 Financing One[Member] |  |  |  |
Warrant outstanding | [2] | 50,000 |  |
Warrant exercise price | [2] | $ 11.00 |  |
Warrants expiration date | [2] | May 11, 2020 |  |
[1] | In connection with the offering on July 31, 2015, the placement agent received warrants to purchase 20,000 shares of common stock at $6.05 per share. The warrants are currently exercisable and expire on July 31, 2020.
[2] | In connection with the offering on May 11, 2015, the placement agent received warrants to purchase 50,000 shares of common stock at $11.00 per share. The warrants are currently exercisable and expire on May 11, 2020.

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