Condensed Consolidated Income Statement (unaudited) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Revenues:
Royalties	$ 6,167,811	$ 4,702,631	$ 12,723,458	$ 10,296,740
Licensing revenues	12,345	12,344	24,689	24,689
Total Revenues	6,180,156	4,714,975	12,748,147	10,321,429
Costs and expenses:
Research and development	444,477	256,736	692,977	496,201
General and administrative	1,902,083	1,795,265	4,066,416	3,598,387
Total Cost and Expenses	2,346,560	2,052,001	4,759,393	4,094,588
Operating income	3,833,596	2,662,974	7,988,754	6,226,841
Other income:
Interest income	67,327	18,482	120,030	32,202
Other income	9,836	0	31,194	4,633
Total other income	77,163	18,482	151,224	36,835
Income before income tax expense	3,910,759	2,681,456	8,139,978	6,263,676
Provision for income tax expense	(1,338,044)	(924,252)	(2,738,139)	(2,175,572)
Net income	$ 2,572,715	$ 1,757,204	$ 5,401,839	$ 4,088,104
Basic net income per share (in dollars per share)	$ 0.37	$ 0.26	$ 0.77	$ 0.61
Diluted net income per share (in dollars per share)	$ 0.35	$ 0.24	$ 0.74	$ 0.57
Shares used in computation of basic net income per share (in shares)	7,018,652	6,759,147	7,015,158	6,749,153
Shares used in computation of diluted net income per share (in shares)	7,268,527	7,233,133	7,272,328	7,225,806