Consolidated Statements of Operations and Comprehensive (Loss) Income (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Revenues:
Professional product revenues	$ 55,431,273	$ 44,428,810	$ 38,268,682
Consumer product revenues	3,085,882	3,554,110	0
Service revenues	13,868,665	15,134,438	15,248,418
Royalty revenues	6,887,655	38,097,285	5,898,229
Other revenues	1,299,760	2,222,225	4,305,556
Total revenues	80,573,235	103,436,868	63,720,885
Costs and expenses:
Cost of professional product revenues	22,350,415	18,178,369	14,561,230
Cost of consumer product revenues	6,580,752	3,267,165	135,737
Cost of service revenues	6,208,221	6,838,137	5,835,275
Cost of royalty revenues	2,755,063	14,419,660	2,359,292
Research and development	10,298,581	15,644,338	15,457,745
Selling and marketing	27,482,574	25,623,587	20,013,369
General and administrative	10,889,034	8,727,930	14,549,822
Total costs and expenses	86,564,640	92,699,186	72,912,470
(Loss) income from operations	(5,991,405)	10,737,682	(9,191,585)
Interest income	344,992	1,095,536	421,580
Other (loss) income	(40,216)	(298,826)	297,644
(Loss) income before income taxes	(5,686,629)	11,534,392	(8,472,361)
Provision for income taxes	484,530	4,105,963	302,595
Net (loss) income	(6,171,159)	7,428,429	(8,774,956)
Net (loss) income per share:
Basic (in dollars per share)	$ (0.33)	$ 0.40	$ (0.47)
Diluted (in dollars per share)	$ (0.33)	$ 0.39	$ (0.47)
Weighted average number of shares outstanding:
Basic (in shares)	18,863,708	18,695,612	18,548,548
Diluted (in shares)	18,863,708	18,942,016	18,548,548
Comprehensive (loss) income:
Net (loss) income	(6,171,159)	7,428,429	(8,774,956)
Unrealized gain (loss) on marketable securities, net of taxes	7,200	69,190	(54,795)
Foreign currency translation adjustment	3,758	157,767	(143,714)
Comprehensive (loss) income	$ (6,160,201)	$ 7,655,386	$ (8,973,465)