Consolidated Statements of Operations - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Revenue:
Product revenue	$ 10,116,897	$ 24,847,724
Support and services revenue	20,146,449	23,723,267
Total revenue	30,263,346	48,570,991
Cost of revenue:
Product	932,446	1,942,985
Support and service	7,351,857	7,739,149
Total cost of revenue	8,284,303	9,682,134
Gross profit	21,979,043	38,888,857
Operating expenses:
Research and development costs	11,702,956	12,787,606
Selling and marketing	13,918,493	18,021,989
General and administrative	6,470,579	9,181,289
Investigation, litigation, and settlement related costs	0	8,842
Restructuring costs	177,389	172,995
Total operating expenses	32,269,417	40,172,721
Operating loss	(10,290,374)	(1,283,864)
Interest and other loss, net	(121,213)	(269,954)
Loss before income taxes	(10,411,587)	(1,553,818)
Provision for income taxes	587,207	375,543
Net loss	(10,998,794)	(1,929,361)
Less: Accrual of Series A redeemable convertible preferred stock dividends	777,890	765,203
Less: Accretion to redemption value of Series A redeemable convertible preferred stock	1,181,446	587,613
Net loss attributable to common stockholders	$ (12,958,130)	$ (3,282,177)
Earnings per share
Basic net loss per share attributable to common stockholders (in dollars per share)	$ (0.30)	$ (0.08)
Diluted net loss per share attributable to common stockholders (in dollars per share)	$ (0.30)	$ (0.08)
Weighted average basic shares outstanding (in shares)	43,091,878	41,093,644
Weighted average diluted shares outstanding (in shares)	43,091,878	41,093,644