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Basis of Presentation, Liquidity and Risks and Uncertainties (Details) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net loss	$ 60,169,041	$ (19,171,336)	$ 196,711,130	$ 142,072,777
Working capital	436,000,000		436,000,000
Retained earnings (accumulated deficit)	1,102,907,942		1,102,907,942		$ 906,196,812
Cash, cash equivalents, and short-term investments	$ 394,900,000		394,900,000
Proceeds from issuance of stock			$ 162,105,030	$ 329,960,855
Common stock | Underwritten Public Offering
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Proceeds from issuance of stock					162,100,000
Common stock | Sales Agreements
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Proceeds from issuance of stock					$ 454,500,000

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