Consolidated Statements of Operations (unaudited) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Revenues:
Net sales	$ 2,651	$ 3,378	$ 32,394	$ 12,128
Royalties	3,087,491	2,307,073	9,717,994	6,698,355
Licensing revenues	54,981	137,774	644,742	926,324
Total Revenues	3,145,123	2,448,225	10,395,130	7,636,807
Costs and expenses:
Research and development	346,768	293,221	1,111,686	947,119
General and administrative	1,059,854	1,375,477	3,914,590	3,614,125
Total Cost and Expenses	1,406,622	1,668,698	5,026,276	4,561,244
Operating income	1,738,501	779,527	5,368,854	3,075,563
Other income (expense):
Interest income	7,134	8,292	19,510	27,556
Income before expense for income tax	1,745,635	787,819	5,388,364	3,103,119
Income tax benefit (expense)	(566,860)	(316,772)	(1,828,319)	(1,223,000)
Net income	$ 1,178,775	$ 471,047	$ 3,560,045	$ 1,880,119
Basic net income per share (in dollars per share)	$ 0.19	$ 0.07	$ 0.56	$ 0.30
Diluted net income per share (in dollars per share)	$ 0.17	$ 0.07	$ 0.51	$ 0.27
Shares used in computation of basic net income per share (in shares)	6,338,901	6,343,210	6,346,978	6,341,031
Shares used in computation of diluted net income per share (in shares)	6,924,363	6,961,652	69,164,485	6,985,290