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Subsequent Event (Details) - Subsequent Event [Member] | 1 Months Ended
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Mar. 01, 2021 | Jan. 20, 2021
March 2021 Public Offering [Member] |  |
Subsequent Event (Details) [Line Items] |  |
Public offering, description | the Company offered and sold to the public investors an aggregate of 29,277,866 shares of common stock and 14,638,933 warrants to purchase up to 14,638,933 shares of common stock in a firm commitment underwritten public offering for gross proceeds of approximately $21.9 million. The purchase price for each share of common stock and accompanying warrant sold in the offering was $0.75. The warrants are exercisable commencing on March 1, 2021 at an exercise price of $0.75 and will expire on March 1, 2026. |
January 2021 Public Offering [Member] |  |
Subsequent Event (Details) [Line Items] |  |
Public offering, description |  | the Company offered and sold to certain institutional investors an aggregate of 26,181,818 shares of common stock and 26,181,818 warrants to purchase up to 26,181,818 shares of common stock in a best-efforts public offering for gross proceeds of approximately $14.4 million. The purchase price for each share of common stock and the corresponding warrant sold in the offering was $0.55. The warrants are exercisable commencing on January 20, 2021 at an exercise price of $0.55 and will expire on January 20, 2026.

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