Stockholders' Equity (Details Narrative) - USD ($) |
1 Months Ended | 3 Months Ended | 12 Months Ended | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Jan. 12, 2021 |
Jan. 12, 2021 |
Jan. 04, 2021 |
Dec. 22, 2020 |
Aug. 13, 2020 |
Jul. 28, 2020 |
Jul. 23, 2020 |
Nov. 15, 2019 |
Aug. 31, 2020 |
Mar. 31, 2021 |
Mar. 31, 2020 |
Dec. 31, 2020 |
Dec. 31, 2019 |
|
| Offering costs | $ 14,906,805 | $ 16,774 | |||||||||||
| Net proceeds | $ 327,103,650 | 401,891 | |||||||||||
| Common stock, par value | $ 0.0001 | $ 0.0001 | |||||||||||
| Common stock, issued during the period, value | $ 237,429,619 | $ 385,117 | $ 297,659,270 | ||||||||||
| Common stock shares issued during period | 1,058,558 | 474,808 | |||||||||||
| Proceeds from public offering | $ 2,300,000 | ||||||||||||
| Underwriting Agreement [Member] | H.C. Wainwright [Member] | |||||||||||||
| Sale of stock | 7,666,666 | ||||||||||||
| Stock option granted | 999,999 | ||||||||||||
| Shares issued price | $ 0.90 | ||||||||||||
| Gross proceeds | $ 6,900,000 | ||||||||||||
| Offering costs | 600,000 | ||||||||||||
| Net proceeds | $ 6,300,000 | ||||||||||||
| Warrant to purchase common stock | 536,667 | ||||||||||||
| Warrant term | 5 years | ||||||||||||
| Warrant exercise price | $ 1.125 | ||||||||||||
| 2020 At the Market Agreement [Member] | |||||||||||||
| Offering costs | $ 9,400,000 | $ 10,000 | |||||||||||
| Net proceeds | $ 307,100,000 | $ 300,000 | |||||||||||
| Common stock, par value | $ 0.0001 | $ 0.0001 | |||||||||||
| Common stock shares issued during period | 54,301,698 | 172,126 | |||||||||||
| 2020 At the Market Agreement [Member] | Maximum [Member] | |||||||||||||
| Common stock, issued during the period, value | $ 200,000,000 | $ 100,000,000 | |||||||||||
| Securities Purchase Agreement [Member] | |||||||||||||
| Sale of stock | 12,500,000 | ||||||||||||
| Common stock shares issued during period | 12,500,000 | ||||||||||||
| Securities Purchase Agreement [Member] | Certain Purchasers [Member] | |||||||||||||
| Sale of stock | 12,500,000 | ||||||||||||
| Shares issued price | $ 20.00 | $ 20.00 | |||||||||||
| Proceeds from public offering | $ 250,000,000 | ||||||||||||
| Letter Agreement [Member] | H.C. Wainwright & Co., LLC [Member] | |||||||||||||
| Warrant to purchase common stock | 375,000 | ||||||||||||
| Warrant exercise price | $ 25.00 | ||||||||||||
| Fee payment description | The Company agreed to pay to the Placement Agent a cash fee of 5.0% of the aggregate gross proceeds raised in the Offering. The Company also issued to designees of the Placement Agent warrants to purchase up to 3.0% of the aggregate number of shares of Common Stock sold in the transactions, or warrants to purchase up to 375,000 shares of Common Stock (the "Placement Agent Warrants"). The Placement Agent Warrants have an exercise price equal to 125% of the offering price per share (or $25.00 per share). The Company also agreed to pay the Placement Agent $50,000 for accountable expenses, to reimburse an investor's legal fees in an amount up to $7,500 and to pay $12,900 for the Placement Agent's clearing fees. Pursuant to the terms of the Engagement Letter, the Placement Agent has the right, for a period of twelve months following the closing of the Offerings, to act (i) as financial advisor in connection with any merger, consolidation or similar business combination by the Company and (ii) as sole book-running manager, sole underwriter or sole placement agent in connection with certain debt and equity financing transactions by the Company. | ||||||||||||
| Accountable expense | $ 50,000 | ||||||||||||
| Legal fees | 7,500 | ||||||||||||
| Agent clearance fees | $ 12,900 | ||||||||||||