CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Revenue:
Product revenue	$ 2,939,594	$ 3,650,504	$ 5,220,452	$ 17,620,871
Support and services revenue	5,128,357	5,902,085	10,279,830	11,871,594
Total revenue	8,067,951	9,552,589	15,500,282	29,492,465
Cost of revenue:
Product	319,974	718,057	564,247	1,108,281
Support and service	1,999,125	1,940,729	3,761,345	3,960,747
Total cost of revenue	2,319,099	2,658,786	4,325,592	5,069,028
Gross profit	5,748,852	6,893,803	11,174,690	24,423,437
Operating expenses:
Research and development costs	3,304,079	3,067,732	6,960,856	6,273,599
Selling and marketing	4,124,350	4,371,513	8,393,150	9,676,875
General and administrative	1,833,479	2,583,893	3,539,404	5,076,834
Investigation, litigation, and settlement related (benefits) costs	0	(8,186)	0	8,842
Restructuring costs	93,405	23,495	177,389	157,971
Total operating expenses	9,355,313	10,038,447	19,070,799	21,194,121
Operating (loss) income	(3,606,461)	(3,144,644)	(7,896,109)	3,229,316
Interest and other income (loss), net	237,251	98,411	355,434	(365,665)
(Loss) income before income taxes	(3,369,210)	(3,046,233)	(7,540,675)	2,863,651
Provision (benefit) for income taxes	165,672	(378,049)	290,819	269,456
Net (loss) income	(3,534,882)	(2,668,184)	(7,831,494)	2,594,195
Less: Accrual of Series A redeemable convertible preferred stock dividends	195,366	186,904	387,974	377,690
Less: Accretion to redemption value of Series A redeemable convertible preferred stock	170,981	143,557	334,650	280,974
Net (loss) income attributable to common stockholders	$ (3,901,229)	$ (2,998,645)	$ (8,554,118)	$ 1,935,531
Basic net (loss) income per share attributable to common stockholders (in dollars per share)	$ (0.09)	$ (0.07)	$ (0.20)	$ 0.05
Diluted net (loss) income per share attributable to common stockholders (in dollars per share)	$ (0.09)	$ (0.07)	$ (0.20)	$ 0.05
Weighted average basic shares outstanding (in shares)	43,159,285	40,964,160	42,521,018	40,949,849
Weighted average diluted shares outstanding (in shares)	43,159,285	40,964,160	42,521,018	42,492,677