CONSOLIDATED STATEMENTS OF OPERATIONS (USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
REVENUE:
Material sales	$ 37,443,329	$ 17,271,749	$ 5,668,752
Royalty and license fees	15,345,281	4,605,512	2,656,326
Technology development and support revenue	8,500,068	8,667,119	7,461,539
Total revenue	61,288,678	30,544,380	15,786,617
OPERATING EXPENSES:
Cost of material sales	3,730,840	887,509	374,322
Research and development	24,129,233	21,695,139	21,122,156
Selling, general and administrative	18,939,916	13,041,438	10,921,859
Patent costs	7,442,374	4,270,689	3,239,795
Royalty and license expense	1,359,578	875,902	395,279
Total operating expenses	55,601,941	40,770,677	36,053,411
Operating income (loss)	5,686,737	(10,226,297)	(20,266,794)
INTEREST INCOME	994,221	279,474	669,633
INTEREST EXPENSE	(49,575)	(27,871)	(7,019)
LOSS ON STOCK WARRANT LIABILITY	(4,190,283)	(10,077,065)	(1,031,055)
INCOME (LOSS) BEFORE INCOME TAX BENEFIT	2,441,100	(20,051,759)	(20,635,235)
INCOME TAX BENEFIT	714,053	134,349	129,915
NET INCOME (LOSS)	$ 3,155,153	$ (19,917,410)	$ (20,505,320)
NET INCOME (LOSS) PER COMMON SHARE:
BASIC (in dollars per share)	$ 0.07	$ (0.53)	$ (0.56)
DILUTED (in dollars per share)	$ 0.07	$ (0.53)	$ (0.56)
WEIGHTED AVERAGE SHARES USED IN COMPUTING NET INCOME (LOSS) PER COMMON SHARE:
BASIC (in shares)	43,737,968	37,567,374	36,479,331
DILUTED (in shares)	45,140,394	37,567,374	36,479,331