Consolidated Balance Sheets - USD ($)	Jun. 30, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 64,741,921	$ 8,962,686
Restricted cash	34,174	34,174
Total cash, cash equivalents and restricted cash	64,776,095	8,996,860
Short-term investments	15,484,402	28,277,386
Accounts receivable	1,182,099	1,021,179
Tax refund receivable	5,506,946	629,096
Prepaid expenses and other current assets	1,020,876	470,228
Total current assets	87,970,418	39,394,749
Property and equipment, net	1,024,640	1,104,208
Right of use asset	662,074	698,321
Intangible assets, net	12,785,655	12,732,195
Other assets	100,980	128,547
Total assets	102,543,767	54,058,020
Current liabilities:
Accounts payable	195,217	18,232
Accrued expenses and other current liabilities	4,089,749	3,904,767
Notes payable	632,000
Total current liabilities	4,916,966	3,922,999
Contingent consideration	16,390,000	2,750,000
Other long-term liabilities	1,715,024	1,864,875
Total liabilities	23,021,990	8,537,874
Commitments and contingencies (Note 14)
Stockholders’ equity:
Common stock, $0.0001 par value; 200,000,000 shares authorized; 26,553,957 and 15,312,381 shares issued; 26,553,886 and 15,312,167 shares outstanding at June 30, 2020 and December 31, 2019, respectively	2,635	1,508
Additional paid-in capital	242,579,532	187,914,916
Accumulated deficit	(158,028,687)	(137,376,122)
Accumulated other comprehensive loss, net	(5,031,703)	(5,020,156)
Total stockholders’ equity	79,521,777	45,520,146
Total liabilities and stockholders’ equity	$ 102,543,767	$ 54,058,020