Consolidated Statements of Operations (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Revenues:
Product revenues	$ 27,338,557	$ 41,358,621	$ 49,470,139
Support and services revenues	31,297,947	34,052,348	33,400,463
Total revenues	58,636,504	75,410,969	82,870,602
Cost of revenues:
Product	4,155,413	8,215,152	8,386,864
Support and service	11,000,401	12,446,921	13,130,045
Total cost of revenues	15,155,814	20,662,073	21,516,909
Gross profit	43,480,690	54,748,896	61,353,693
Operating expenses
Research and development costs	15,613,543	18,950,084	21,508,712
Selling and marketing	25,222,954	35,694,899	39,288,694
General and administrative	12,265,038	13,334,475	11,696,512
Investigation, litigation, and settlement related costs (benefits)	373,619	(326,408)	10,257,388
Restructuring costs	3,606,020	770,749	822,320
Total operating expenses	57,081,174	68,423,799	83,573,626
Operating loss	(13,600,484)	(13,674,903)	(22,219,933)
Interest and other income (loss), net	1,094,126	(523,011)	59,982
Loss before income taxes	(12,506,358)	(14,197,914)	(22,159,951)
(Benefit)/Provision for income taxes	(1,573,768)	786,407	1,208,332
Net loss	(10,932,590)	(14,984,321)	(23,368,283)
Less: Accrual of preferred stock dividends	216,379	0	0
Less: Accretion to redemption value of Series A preferred stock	127,504	0	0
Net loss attributable to common stockholders	$ (11,276,473)	$ (14,984,321)	$ (23,368,283)
Earnings per share
Basic net loss per share attributable to common stockholders (in dollars per share)	$ (0.24)	$ (0.32)	$ (0.50)
Diluted net loss per share attributable to common stockholders (in dollars per share)	$ (0.24)	$ (0.32)	$ (0.50)
Weighted average basic shares outstanding (in shares)	47,979,467	47,408,995	46,648,928
Weighted average diluted shares outstanding (in shares)	47,979,467	47,408,995	46,648,928