Condensed Consolidated Statements of Operations (USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Revenues:
Product revenues	$ 49,470,139	$ 51,905,096	$ 61,234,075
Support and services revenues	33,400,463	30,938,650	28,225,106
Subtotal Revenues	82,870,602	82,843,746	89,459,181
Cost of revenues:
Product	8,386,864	9,291,236	3,390,065
Support and service	14,109,303	13,204,089	13,676,740
Total cost of revenues	22,496,167	22,495,325	17,066,805
Gross profit	60,374,435	60,348,421	72,392,376
Operating expenses
Research and development costs	20,220,558	25,849,374	26,609,986
Selling and marketing	39,597,590	40,844,909	42,255,099
General and administrative	11,696,512	9,626,464	9,875,254
Investigation costs	10,257,388	1,616,241	0
Restructurting costs	822,320	0	0
Total operating expenses	82,594,368	77,936,988	78,740,339
Operating loss	(22,219,933)	(17,588,567)	(6,347,963)
Interest and other income (loss), net	59,982	(213,079)	(127,803)
Loss before income taxes	(22,159,951)	(17,801,646)	(6,475,766)
Provision (benefit) from income taxes	1,208,332	17,573,975	(3,383,061)
Net loss	$ (23,368,283)	$ (35,375,621)	$ (3,092,705)
Basic net loss per share (in dollars per share)	$ (0.50)	$ (0.78)	$ (0.07)
Diluted net loss per share (in dollars per share)	$ (0.50)	$ (0.78)	$ (0.07)
Weighted average basic shares outstanding (in shares)	46,648,928	45,549,314	44,781,918
Weighted average diluted shares outstanding (in shares)	46,648,928	45,549,314	44,781,918