Consolidated Statements of Operations and Comprehensive Income (Loss) (USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Revenues:
Professional product revenues	$ 44,428,810	$ 38,268,682	$ 34,133,999
Consumer product revenues	3,554,110	0	0
Service revenues	15,134,438	15,248,418	14,710,851
Royalty revenues	38,097,285	5,898,229	4,891,047
Funded product development revenues	0	0	1,835,314
Other revenues	2,222,225	4,305,556	5,000,000
Total revenues	103,436,868	63,720,885	60,571,211
Costs and expenses:
Cost of professional product revenues	18,178,369	14,561,230	13,555,612
Cost of consumer product revenues	3,267,165	135,737	0
Cost of service revenues	6,838,137	5,835,275	7,112,066
Cost of royalty revenues	14,419,660	2,359,292	1,956,419
Research and development	15,644,338	15,457,745	14,679,500
Selling and marketing	25,623,587	20,013,369	19,337,135
General and administrative	8,727,930	14,549,822	11,254,199
Total costs and expenses	92,699,186	72,912,470	67,894,931
Income (loss) from operations	10,737,682	(9,191,585)	(7,323,720)
Interest income	1,095,536	421,580	759,815
Other (loss) income	(298,826)	297,644	544,119
Income (loss) before income taxes	11,534,392	(8,472,361)	(6,019,786)
Provision for income taxes	4,105,963	302,595	4,439,248
Net income (loss)	7,428,429	(8,774,956)	(10,459,034)
Net income (loss) per share:
Basic	$ 0.40	$ (0.47)	$ (0.58)
Diluted	$ 0.39	$ (0.47)	$ (0.58)
Weighted average number of shares outstanding:
Basic	18,695,612	18,548,548	18,094,914
Diluted	18,942,016	18,548,548	18,094,914
Comprehensive income (loss):
Net income (loss)	7,428,429	(8,774,956)	(10,459,034)
Unrealized gain (loss) on marketable securities, net of taxes	69,190	(54,795)	380,910
Foreign currency translation adjustment	157,767	(143,714)	(130,764)
Comprehensive income (loss):	$ 7,655,386	$ (8,973,465)	$ (10,208,888)