CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($)	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Cash flows from operating activities:
Net (loss) income	$ (4,296,612)	$ 5,262,379
Adjustments to reconcile net (loss) income to net cash used in operating activities:
Depreciation and amortization	396,871	537,738
Share-based payment compensation	290,286	308,905
Non-cash professional services expenses	700,324	65,901
Restructuring costs	83,984	134,476
Payment of restructuring costs	(54,846)	(181,655)
(Benefit) provision for returns and doubtful accounts	(4,762)	41,598
Deferred income tax provision	6,630	24,609
Changes in operating assets and liabilities:
Accounts receivable	1,389,080	2,357,849
Prepaid expenses and other current assets	260,358	(403,114)
Inventory	40,505	201,394
Other assets	32,679	25,109
Accounts payable	83,243	143,110
Accrued expenses and other long-term liabilities	(850,109)	966,815
Deferred revenue	(73,970)	(9,753,041)
Net cash used in operating activities	(1,996,339)	(267,927)
Cash flows from investing activities:
Sales of marketable securities	4,477,000	8,410,724
Purchases of marketable securities	(150,000)	(8,442,649)
Purchases of property and equipment	(102,266)	(172,694)
Capitalized software development costs	0	(14,100)
Security deposits	78,009	7,988
Purchase of intangible assets	(20,679)	(58,487)
Net cash provided by (used in) investing activities	4,282,064	(269,218)
Cash flows from financing activities:
Proceeds from exercise of stock options	0	31,416
Net cash provided by financing activities	0	31,416
Effect of exchange rate changes on cash and cash equivalents	33,802	(278,011)
Net increase (decrease) in cash and cash equivalents	2,319,527	(783,740)
Cash and cash equivalents, beginning of period	6,013,382	10,873,891
Cash and cash equivalents, end of period	8,332,909	10,090,151
Supplemental disclosures:
Cash paid/(refund received) for income taxes, net	30,568	(7,488)
Non-cash investing and financing activities:
Undistributed Series A redeemable convertible preferred stock dividends	192,608	377,690
Series A redeemable convertible preferred stock dividend payment	$ 188,805	$ 0