CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($)	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Revenue:
Product revenue	$ 1,921,052	$ 2,280,858
Support and services revenue	4,118,063	5,151,473
Total revenue	6,039,115	7,432,331
Cost of revenue:
Product	198,715	244,273
Support and service	1,253,916	1,762,220
Total cost of revenue	1,452,631	2,006,493
Gross profit	4,586,484	5,425,838
Operating expenses:
Research and development costs	2,294,863	3,656,777
Selling and marketing	2,050,542	4,268,800
General and administrative	1,621,551	1,705,925
Restructuring	(236,302)	83,984
Total operating expenses	5,730,654	9,715,486
Operating loss	(1,144,170)	(4,289,648)
Interest and other income, net	154,921	118,183
Loss before income taxes	(989,249)	(4,171,465)
Provision for income taxes	122,948	125,147
Net loss	(1,112,197)	(4,296,612)
Less: Accrual of Series A redeemable convertible preferred stock dividends	204,575	192,608
Less: Accretion to redemption value of Series A redeemable convertible preferred stock	0	163,669
Net loss attributable to common stockholders	$ (1,316,772)	$ (4,652,889)
Basic net (loss) income per share attributable to common stockholders (in dollars per share)	$ (0.03)	$ (0.11)
Diluted net (loss) income per share attributable to common stockholders (in dollars per share)	$ (0.03)	$ (0.11)
Weighted average basic shares outstanding (in shares)	44,088,352	41,882,232
Weighted average diluted shares outstanding (in shares)	44,088,352	41,882,232