Consolidated Statements of Cash Flows - USD ($)	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss	$ (73,201,503)	$ (38,422,700)
Adjustments to reconcile net loss to net cash used in operating activities:
Change in fair value of contingent consideration liability	1,560,000	22,320,000
Impairment loss on construction-in-progress	8,070,000
Stock-based compensation expense	4,200,064	1,865,520
Depreciation and amortization	434,009	218,932
Unrealized losses (gains) on foreign currency exchange	297,135	(44,323)
Changes in operating assets and liabilities:
Accounts receivable	3,036,442	(2,815,343)
Prepaid expenses and other current assets	(5,263,432)	(636,943)
Accounts payable	(606,210)	856,653
Accrued expenses and other liabilities	6,916,132	1,199,708
Income tax receivable	(1,713,642)	(5,564,759)
Net cash used in operating activities	(56,271,005)	(21,023,255)
CASH FLOWS FROM INVESTING ACTIVITIES:
Proceeds from sales and maturities of short-term investments	82,406,000	39,385,689
Purchases of short-term investments	(7,591,962)	(74,413,135)
Purchases of property and equipment, net	(11,970,179)	(100,329)
Cash paid for internally developed patents	(189,649)	(98,893)
Net cash provided by (used in) investing activities	62,654,210	(35,226,668)
CASH FLOWS FROM FINANCING ACTIVITIES:
Payments of deferred offering costs	(118,522)	(160,522)
Proceeds from exercises of warrants		41,038,458
Proceeds from issuance of common stock in at-the-market offerings, net	52,356,204	25,614,836
Proceeds from issuance of common stock and pre-funded warrants in public offering, net		124,027,815
Proceeds from issuance of notes payable		632,000
Payments of notes payable		(632,000)
Proceeds from issuance of common stock from Employee Stock Purchase Plan	224,472	135,471
Proceeds from exercises of stock options	100,399	126,445
Net cash provided by financing activities	52,562,553	190,782,503
Net increase in cash and cash equivalents and restricted cash	58,945,758	134,532,580
Cash, cash equivalents and restricted cash at beginning of period	115,951,981	8,996,860
Cash, cash equivalents and restricted cash at end of period	174,897,739	143,529,440
SUPPLEMENTAL CASH FLOW INFORMATION:
Cash paid for interest		$ 1,791
SUPPLEMENTAL NON-CASH FINANCING ACTIVITIES:
Operating lease liability and right of use asset addition	$ 72,047