Consolidated Balance Sheets - USD ($)	Dec. 31, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 27,041,517	$ 44,867,846
Marketable securities	78,791,858	84,133,565
Prepaid expenses and other current assets	3,764,332	2,379,280
Total current assets	109,597,707	131,380,691
Long-term equity investments	17,625,620	5,622,547
Restricted cash	1,930,753	1,930,753
Right-of-use asset, net	13,894,376	14,922,669
Property and equipment, net	768,753	1,147,963
Other assets	209,574	261,191
Total assets	144,026,783	155,265,814
Current liabilities:
Accounts payable	3,702,936	1,952,910
Accrued expenses	6,525,235	4,504,669
Current portion, lease liability	1,246,119	533,946
Total current liabilities	11,474,290	6,991,525
Long-term liabilities:
Lease liability	14,755,606	16,001,725
Royalty monetization liability	30,000,000	0
Total liabilities	56,229,896	22,993,250
Stockholders' equity:
Preferred stock, $0.001 par value; 10,000,000 shares authorized; Series A convertible preferred stock, 10,000 shares designated, 1,250 shares issued and outstanding at December 31, 2023 and 2022	1	1
Common stock, $0.001 par value; 125,000,000 shares authorized; 70,691,992 and 70,466,885 shares issued and outstanding at December 31, 2023 and 2022, respectively	70,692	70,467
Additional paid-in-capital	365,590,993	357,770,825
Accumulated other comprehensive income (loss)	702	(42,187)
Accumulated deficit	(277,865,501)	(225,526,542)
Total stockholders' equity	87,796,887	132,272,564
Total liabilities and stockholders' equity	$ 144,026,783	$ 155,265,814