Consolidated Balance Sheets - USD ($)	Sep. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 174,863,565	$ 115,917,807
Restricted cash	34,174	34,174
Total cash, cash equivalents and restricted cash	174,897,739	115,951,981
Short-term investments	25,020,738	100,005,558
Accounts receivable	1,573,760	4,610,202
Income tax receivable	9,476,435	7,762,793
Prepaid expenses and other current assets	7,294,360	1,926,675
Total current assets	218,263,032	230,257,209
Property and equipment, net	4,718,146	1,056,920
Intangible assets, net	12,993,575	12,823,846
Other assets	931,904	977,238
Total assets	236,906,657	245,115,213
Current liabilities:
Accounts payable	6,083	612,293
Accrued expenses and other current liabilities	19,120,902	11,408,154
Total current liabilities	19,126,985	12,020,447
Contingent consideration	6,950,000	5,390,000
Other long-term liabilities	1,565,611	1,828,443
Total liabilities	27,642,596	19,238,890
Commitments and contingencies (Note 16)
Stockholders' equity:
Common stock, $0.0001 par value; 200,000,000 shares authorized; 39,702,768 and 37,142,946 shares issued and outstanding at September 30, 2021 and December 31, 2020, respectively	3,959	3,697
Additional paid-in capital	483,582,367	417,337,742
Accumulated deficit	(269,282,102)	(186,420,599)
Accumulated other comprehensive loss, net	(5,040,163)	(5,044,517)
Total stockholders' equity	209,264,061	225,876,323
Total liabilities and stockholders' equity	$ 236,906,657	$ 245,115,213