Consolidated Statements of Operations and Comprehensive Income (Loss) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Revenues:
Revenues	$ 102,306,337
Revenues		$ 500,000
Operating costs and expenses:
Cost of sales	14,759,139
Research and development	18,842,752	19,919,204
Selling, general and administrative	36,881,187	15,875,961
Total operating costs and expenses	70,483,078	35,795,165
Other income, net	1,585,774	1,291,651
Operating income (loss)	31,823,259	(35,295,165)
Net income (loss) before income taxes	33,409,033	(34,003,514)
Provision for income taxes	1,533,696
Net income (loss)	$ 31,875,337	$ (34,003,514)
Net income (loss) per share:
Basic	$ 0.31	$ (0.33)
Diluted	$ 0.30	$ (0.33)
Weighted average shares outstanding:
Basic	102,944,316	102,633,884
Diluted	106,020,936	102,633,884
Net income (loss)	$ 31,875,337	$ (34,003,514)
Other comprehensive income (loss):
Unrealized gain (loss) on available-for-sale securities	29,753	(20,248)
Comprehensive income (loss)	31,905,090	(34,023,762)
Product [Member]
Revenues:
Revenues	102,306,337
Collaborative Arrangement Product Agreement [Member]
Revenues:
Revenues	$ 0
Revenues		$ 500,000