Consolidated Statements of Operations (unaudited) (USD $)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Revenues:
Net sales	$ 2,243	$ 7,504
Royalties	3,432,900	1,899,969
Licensing revenues	544,881	679,275
Total Revenues	3,980,024	2,586,748
Costs and expenses:
Research and development	294,874	249,552
General and administrative	1,618,482	1,088,722
Total Cost and Expenses	1,913,356	1,338,274
Operating income	2,066,668	1,248,474
Other income:
Interest income	5,866	9,493
Income before provision for income taxes	2,072,534	1,257,967
Provision for income taxes	(719,450)	(515,577)
Net income	$ 1,353,084	$ 742,390
Basic net income per share (in dollars per share)	$ 0.21	$ 0.12
Diluted net income per share (in dollars per share)	$ 0.19	$ 0.11
Shares used in computation of basic net income per share (in shares)	6,356,954	6,336,503
Shares used in computation of diluted net income per share (in shares)	6,955,452	6,969,936