CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Revenue:
Product revenue	$ 2,499,655	$ 2,939,594	$ 4,420,707	$ 5,220,452
Support and services revenue	4,234,671	5,128,357	8,352,734	10,279,830
Total revenue	6,734,326	8,067,951	12,773,441	15,500,282
Cost of revenue:
Product	351,969	319,974	550,684	564,247
Support and service	1,418,663	1,999,125	2,672,579	3,761,345
Total cost of revenue	1,770,632	2,319,099	3,223,263	4,325,592
Gross profit	4,963,694	5,748,852	9,550,178	11,174,690
Operating expenses:
Research and development costs	2,025,132	3,304,079	4,319,995	6,960,856
Selling and marketing	2,109,599	4,124,350	4,160,141	8,393,150
General and administrative	1,345,343	1,833,479	2,966,894	3,539,404
Restructuring	0	93,405	(236,302)	177,389
Total operating expenses	5,480,074	9,355,313	11,210,728	19,070,799
Operating loss	(516,380)	(3,606,461)	(1,660,550)	(7,896,109)
Interest and other (loss) income, net	(29,121)	237,251	125,800	355,434
Loss before income taxes	(545,501)	(3,369,210)	(1,534,750)	(7,540,675)
Provision for income taxes	94,300	165,672	217,248	290,819
Net loss	(639,801)	(3,534,882)	(1,751,998)	(7,831,494)
Less: Accrual of Series A redeemable convertible preferred stock dividends	215,089	195,366	419,664	387,974
Less: Accretion to redemption value of Series A redeemable convertible preferred stock	0	170,981	0	334,650
Net loss attributable to common stockholders	$ (854,890)	$ (3,901,229)	$ (2,171,662)	$ (8,554,118)
Basic net loss per share attributable to common stockholders (in dollars per share)	$ (0.02)	$ (0.09)	$ (0.05)	$ (0.20)
Diluted net loss per share attributable to common stockholders (in dollars per share)	$ (0.02)	$ (0.09)	$ (0.05)	$ (0.20)
Weighted average basic shares outstanding (in shares)	44,440,751	43,159,285	44,265,525	42,521,018
Weighted average diluted shares outstanding (in shares)	44,440,751	43,159,285	44,265,525	42,521,018