Condensed Consolidated Income Statement (unaudited) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Revenues:
Royalties	$ 4,702,631	$ 2,624,774	$ 10,296,740	$ 5,365,092
Licensing revenues	12,344	17,282	24,689	34,565
Total Revenues	4,714,975	2,642,056	10,321,429	5,399,657
Costs and expenses:
Research and development	256,736	286,332	496,201	669,036
General and administrative	1,795,265	1,490,514	3,598,387	2,736,819
Total Cost and Expenses	2,052,001	1,776,846	4,094,588	3,405,855
Operating income	2,662,974	865,210	6,226,841	1,993,802
Other income:
Interest income	18,482	7,352	32,202	14,323
Other income	0	10,449	4,633	15,277
Total other income	18,482	17,801	36,835	29,600
Income before income tax expense	2,681,456	883,011	6,263,676	2,023,402
Income tax expense	(924,252)	(305,045)	(2,175,572)	(691,447)
Net income	$ 1,757,204	$ 577,966	$ 4,088,104	$ 1,331,955
Basic net income per share (in dollars per share)	$ 0.26	$ 0.09	$ 0.61	$ 0.21
Diluted net income per share (in dollars per share)	$ 0.24	$ 0.08	$ 0.57	$ 0.19
Shares used in computation of basic net income per share (in shares)	6,759,147	6,429,203	6,749,153	6,404,170
Shares used in computation of diluted net income per share (in shares)	7,233,133	7,009,625	7,225,806	7,018,533