Consolidated Statements of Income - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Revenues:
Total revenues	$ 11,255,864	$ 9,442,253	$ 24,827,933	$ 26,424,380
Costs and expenses:
Research and development	179,450	143,185	461,881	454,042
General and administrative	3,064,484	1,978,078	10,226,391	6,613,362
Milestone fee	1,500,000		1,500,000
Restructuring charges			1,146,045
Total Costs and Expenses	4,743,934	2,121,263	13,334,317	7,067,404
Operating income	6,511,930	7,320,990	11,493,616	19,356,976
Other income:
Interest income	264,641	504,909	1,135,238	1,471,489
Income before income tax expense	6,776,571	7,825,899	12,628,854	20,828,465
Provision for income tax expense	(1,389,964)	(1,552,966)	(2,627,645)	(3,712,477)
Net income	$ 5,386,607	$ 6,272,933	$ 10,001,209	$ 17,115,988
Earnings per common share:
Basic (in dollars per share)	$ 0.73	$ 0.86	$ 1.36	$ 2.34
Diluted (in dollars per share)	$ 0.73	$ 0.85	$ 1.36	$ 2.33
Shares used in calculation of net income per common share:
Basic (in shares)	7,344,955	7,334,212	7,340,046	7,306,665
Diluted (in shares)	7,366,768	7,359,034	7,363,373	7,347,701
Royalties
Revenues:
Total revenues	$ 9,255,864	$ 9,442,253	$ 22,827,933	$ 26,424,380
License Revenues
Revenues:
Total revenues	$ 2,000,000		$ 2,000,000