Consolidated Statements of Operations (unaudited) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Revenues:
Net sales	$ 3,678	$ 2,243
Royalties	2,740,318	3,432,900
Licensing revenues	17,283	544,881
Total Revenues	2,761,279	3,980,024
Costs and expenses:
Research and development	382,704	294,874
General and administrative	1,246,305	1,618,482
Total Cost and Expenses	1,629,009	1,913,356
Operating income	1,132,270	2,066,668
Other income (expense):
Interest income	6,971	5,866
Other income	1,150	0
Total other income (expense)	8,121	5,866
Income before expense for income tax	1,140,391	2,072,534
Income tax benefit (expense)	(386,402)	(719,450)
Net income	$ 753,989	$ 1,353,084
Basic net income per share (in dollars per share)	$ 0.12	$ 0.21
Diluted net income per share (in dollars per share)	$ 0.11	$ 0.19
Shares used in computation of basic net income per share (in shares)	6,378,859	6,356,954
Shares used in computation of diluted net income per share (in shares)	7,022,172	6,955,452