Consolidated Balance Sheets - USD ($)	Mar. 31, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 149,932,387	$ 115,917,807
Restricted cash	34,174	34,174
Total cash, cash equivalents and restricted cash	149,966,561	115,951,981
Short-term investments	76,574,768	100,005,558
Accounts receivable	4,801,428	4,610,202
Tax refund receivable	7,898,067	7,762,793
Prepaid expenses and other current assets	5,950,999	1,926,675
Total current assets	245,191,823	230,257,209
Property and equipment, net	5,198,052	1,056,920
Right of use asset	866,336	903,825
Intangible assets, net	12,879,247	12,823,846
Other assets	115,300	73,413
Total assets	264,250,758	245,115,213
Current liabilities:
Accounts payable	418,243	612,293
Accrued expenses and other current liabilities	9,405,649	11,408,154
Total current liabilities	9,823,892	12,020,447
Contingent consideration	6,270,000	5,390,000
Other long-term liabilities	1,719,438	1,828,443
Total liabilities	17,813,330	19,238,890
Commitments and contingencies (Note 16)
Stockholders’ equity:
Common stock, $0.0001 par value; 200,000,000 shares authorized; 38,257,180 and 37,142,946 shares issued and outstanding at March 31, 2021 and December 31, 2020, respectively	3,810	3,697
Additional paid-in capital	462,417,706	417,337,742
Accumulated deficit	(210,944,707)	(186,420,599)
Accumulated other comprehensive loss, net	(5,039,381)	(5,044,517)
Total stockholders’ equity	246,437,428	225,876,323
Total liabilities and stockholders’ equity	$ 264,250,758	$ 245,115,213