CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($)	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Revenue:
Product revenue	$ 2,280,858	$ 13,970,367
Support and services revenue	5,151,473	5,969,509
Total revenue	7,432,331	19,939,876
Cost of revenue:
Product	244,273	390,224
Support and service	1,762,220	2,020,018
Total cost of revenue	2,006,493	2,410,242
Gross profit	5,425,838	17,529,634
Operating expenses:
Research and development costs	3,656,777	3,205,867
Selling and marketing	4,268,800	5,305,362
General and administrative	1,705,925	2,492,941
Investigation, litigation, and settlement related costs	0	17,028
Restructuring costs	83,984	134,476
Total operating expenses	9,715,486	11,155,674
Operating (loss) income	(4,289,648)	6,373,960
Interest and other income (loss), net	118,183	(464,076)
(Loss) income before income taxes	(4,171,465)	5,909,884
Provision for income taxes	125,147	647,505
Net (loss) income	(4,296,612)	5,262,379
Less: Accrual of Series A redeemable convertible preferred stock dividends	192,608	190,786
Less: Accretion to redemption value of Series A redeemable convertible preferred stock	163,669	137,417
Net (loss) income attributable to common stockholders	$ (4,652,889)	$ 4,934,176
Basic net (loss) income per share attributable to common stockholders (in dollars per share)	$ (0.11)	$ 0.12
Diluted net (loss) income per share attributable to common stockholders (in dollars per share)	$ (0.11)	$ 0.10
Weighted average basic shares outstanding (in shares)	41,882,232	40,935,380
Weighted average diluted shares outstanding (in shares)	41,882,232	51,264,247