Consolidated Statements of Operations (unaudited) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Revenues:
Net sales	$ 27,500	$ 1,246	$ 29,743	$ 8,750
Royalties	3,197,603	2,491,313	6,630,503	4,391,282
Licensing revenues	44,880	109,275	589,761	788,550
Total Revenues	3,269,983	2,601,834	7,250,007	5,188,582
Costs and expenses:
Research and development	470,044	404,346	764,918	653,898
General and administrative	1,236,254	1,149,926	2,854,736	2,238,648
Total Cost and Expenses	1,706,298	1,554,272	3,619,654	2,892,546
Operating income	1,563,685	1,047,562	3,630,353	2,296,036
Other income (expense):
Interest income	6,510	9,771	12,376	19,264
Total other income	6,510	9,771	12,376	19,264
Income before expense for income tax	1,570,195	1,057,333	3,642,729	2,315,300
Income tax benefit (expense)	(542,009)	(390,651)	(1,261,459)	(906,228)
Net income	$ 1,028,186	$ 666,682	$ 2,381,270	$ 1,409,072
Basic net income per share (in dollars per share)	$ 0.16	$ 0.11	$ 0.37	$ 0.22
Diluted net income per share (in dollars per share)	$ 0.15	$ 0.10	$ 0.34	$ 0.20
Shares used in computation of basic net income per share (in shares)	6,345,277	6,343,356	6,351,083	6,339,930
Shares used in computation of diluted net income per share (in shares)	6,968,057	6,971,687	6,966,045	6,984,258