Consolidated Statements of Cash Flows - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss	$ (14,864,108)	$ (3,885,649)
Adjustments to reconcile net loss to net cash used in operating activities:
Change in fair value of contingent consideration liability	880,000	1,750,000
Stock-based compensation expense	1,218,351	214,921
Depreciation and amortization	74,298	73,356
Unrealized losses on foreign currency exchange	33,376	24,939
Changes in operating assets and liabilities:
Accounts receivable	(191,226)	(973,557)
Prepaid expenses and other current assets	(4,200,624)	(214,893)
Accounts payable	(194,050)	911,397
Accrued expenses and other liabilities	(2,189,903)	1,112,718
Tax refund receivable	(135,274)	(3,360,633)
Net cash used in operating activities	(19,569,160)	(4,347,401)
CASH FLOWS FROM INVESTING ACTIVITIES:
Proceeds from sales and maturities of short-term investments	30,912,000	13,700,000
Purchases of short-term investments	(7,476,074)	(7,099,263)
Purchases of property and equipment, net	(4,208,790)	(18,131)
Cash paid for internally developed patents	(62,041)	(19,390)
Net cash provided by investing activities	19,165,095	6,563,216
CASH FLOWS FROM FINANCING ACTIVITIES:
Payments of deferred offering costs	134,413
Proceeds from exercises of warrants		39,974
Proceeds from issuance of common stock in at the market offering, net	34,178,231
Proceeds from issuance of common stock from Employee Stock Purchase Plan	106,001	56,739
Net cash provided by financing activities	34,418,645	96,713
Net increase in cash and cash equivalents and restricted cash	34,014,580	2,312,528
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	149,966,561	$ 11,309,388
SUPPLEMENTAL NON-CASH FINANCING ACTIVITIES:
Fair value of common stock retired in exchange for issuance of common stock warrant	$ 17,200,000