CONSOLIDATED STATEMENTS OF OPERATIONS (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Revenues:
Product revenues	$ 41,358,621	$ 49,470,139	$ 51,905,096
Support and services revenues	34,052,348	33,400,463	30,938,650
Subtotal Revenues	75,410,969	82,870,602	82,843,746
Cost of revenues:
Product	8,215,152	8,386,864	9,291,236
Support and service	12,446,921	13,130,045	12,147,715
Total cost of revenues	20,662,073	21,516,909	21,438,951
Gross profit	54,748,896	61,353,693	61,404,795
Operating expenses
Research and development costs	18,636,328	21,199,816	26,905,748
Selling and marketing	36,008,655	39,597,590	40,844,909
General and administrative	13,334,475	11,696,512	9,626,464
Investigation, litigation, and settlement related costs	(326,408)	10,257,388	1,616,241
Restructuring costs	770,749	822,320	0
Total operating expenses	68,423,799	83,573,626	78,993,362
Operating loss	(13,674,903)	(22,219,933)	(17,588,567)
Interest and other (loss) income, net	(523,011)	59,982	(213,079)
Loss before income taxes	(14,197,914)	(22,159,951)	(17,801,646)
Provision for income taxes	786,407	1,208,332	17,573,975
Net loss	$ (14,984,321)	$ (23,368,283)	$ (35,375,621)
Basic net loss per share (in dollars per share)	$ (0.32)	$ (0.50)	$ (0.78)
Diluted net loss per share (in dollars per share)	$ (0.32)	$ (0.50)	$ (0.78)
Weighted average basic shares outstanding (in shares)	47,408,995	46,648,928	45,549,314
Weighted average diluted shares outstanding (in shares)	47,408,995	46,648,928	45,549,314